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Going back to pre-2015 Geneva: Part II

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President Mahinda Rajapaksa with UNSG Ban Ki-moon in 2009

By Austin Fernando
(Continued from yesterday)

22/1 Proposal (2013-3-21)

A great responsibility was placed on the State officers to implement the proposals in the Resolutions. Unfortunately, the international community did not see this happen. Hence, it decided to submit the 22/1 Resolution on 21 March 2013 by way of registering its protest with Sri Lanka. What it, however, did not understand was that the government was planning to advance a presidential election, and, therefore, committing to implementing the UNHRC would be politically disastrous.

The 22/1 proposal acknowledged the constructive efforts such as the decision to hold the Provincial Council election in the North, infrastructural development, demining and facilitating resettlement of IDPs. However, the National Plan of Action proposed by the LLRC was considered inadequate to address all the findings and constructive recommendations of the Commission. It was also noted that States facing post-conflict situations should abide by international human rights and humanitarian laws. Nationalists did not oppose the earlier actions but resisted the latter which had to do with the military.

The 22/1 Resolution focused on the following salient points:

1 Encouraged the GOSL to implement the recommendations made in the UNHRC Report and to conduct an independent and credible investigation into allegations of violations of international human rights law and international humanitarian law, as applicable.

2 Called upon the GOSL to implement the constructive recommendations of the LLRC Report, and to take all additional steps to fulfill relevant legal obligations and commitment to initiate credible and independent actions to ensure justice, equity, accountability, and reconciliation for all Sri Lankans.

3 Encouraged the GOSL to cooperate with special procedures mandate holders and to respond formally to all outstanding requests.

4 Encouraged the Office of the High Commissioner and relevant special procedures mandate holders to provide, in consultation with and with the concurrence of the GOSL, advice and technical assistance on implementing the above-mentioned steps.

5 Requested the Office of the High Commissioner, with input from relevant special procedure mandate holders, as appropriate, to present an oral update to the Human Rights Council at its twenty-fourth session, and a comprehensive report followed by a discussion on the implementation of the present resolution at its twenty-fifth session.

The implementation of Human Rights and International Humanitarian Laws is the responsibility of any government. But those who duped themselves into believing that ‘internationals can be fooled’ did not want to protect Human Rights or uphold Humanitarian Laws. Although some IDPs were resettled, new military bases sprang up. From the perspective of the Tamils, their legal rights to private lands were denied.

The international community collected data from diplomatic and external sources. It was no secret that they were biased towards the needs and demands of the Tamil community. However, it had a clear understanding of the implementation of the proposals and was concerned about the tardy pace at which it was executed. They understood that the implementation of the proposals could not be expedited. Hence, they went before the UNHRC again.

25/1 Proposal (27.03.2014)

By 2014, the international community sadly believed Sri Lanka was an irresponsible, inert state. Hence the UNHCR, on 27 March 2014, passed the 25/1 Resolution titled ‘Promoting reconciliation, accountability and human rights in Sri Lanka’. The main points therein are as follows:

1.   Welcomed the oral update by the UN High Commissioner for Human Rights to the UNHRC 24th Session and the subsequent report by the Office of the UN High Commissioner for Human Rights (OHCR) on promoting reconciliation and accountability in Sri Lanka and the recommendations and conclusions, including on the establishment of a truth-seeking mechanism and national reparations policy as an integral part of a more comprehensive and inclusive approach to transitional justice.

2.  Called upon the GOSL to conduct an independent and credible investigation into allegations of violations of international human rights and humanitarian laws, as applicable; to hold accountable those responsible for such violations; to end continuing incidents of human rights violations and abuses in Sri Lanka, and to implement the recommendations made in the reports of the OHCR.

3.  Reiterated the earlier call upon the GOSL to implement effectively the constructive recommendations made in the LLRC Report, and to take all additional steps to fulfill its relevant legal obligations and commitments to initiate credible and independent actions to ensure justice, equity, accountability, and reconciliation for all Sri Lankans.

4.  Urged the GOSL to investigate all alleged attacks by individuals and groups on journalists, human rights defenders, members of religious minority groups and other members of civil society, and all places of worship and urged the GOSL to hold perpetrators of such attacks to account and to take steps to prevent such attacks in the future.

5.  Called upon the GOSL to release publicly the results of its investigations into alleged violations by security forces, including the Weliweriya attack, and the report of the Army Court of Inquiry.

6.  Encouraged the GOSL to ensure that all Provincial Councils can operate effectively, in accordance with the 13th Amendment to the Constitution.

7.  Welcomed the visit by the Special Rapporteur on the Human Rights of IDPs in December 2013 and called upon the GOSL to facilitate the effective implementation of durable solutions for all IDPs.

8.  Welcomed the invitation to the Special Rapporteur on the Human Rights of Migrants and the Special Rapporteur on the Right to Education.

9.  Encouraged the GOSL to cooperate with other special procedures mandate holders and to respond formally to all their outstanding requests.

10. Noted the recommendations and conclusions of the High Commissioner regarding ongoing human rights violations and the need for an international inquiry mechanism in the absence of a credible national process with tangible results, and requested the UNHRC:

(a) To monitor the human rights situation in Sri Lanka and to continue to assess progress on relevant national processes.

(b) To undertake a comprehensive investigation into alleged serious violations and abuses of human rights and related crimes by both parties in Sri Lanka during the period covered by the LLRC, and to establish the facts and circumstances of such alleged violations and of the crimes perpetrated to avoid impunity and ensure accountability, with assistance from relevant experts and special procedures mandate holders.

(c) To present an oral update to the Human Rights Council at its 27th session, and a comprehensive report followed by a discussion on the implementation of the present resolution at its 28th Session.

11. Encouraged the UNHRC and relevant special procedure mandate holders to provide, in consultation and the concurrence of the GOSL, to provide advice and technical assistance on implementing the above-mentioned steps.

12. Called upon the GOSL to cooperate with the Office of the High Commissioner in the implementation of the present resolution.

The government did not proceed to implement these recommendations. It chose to ignore Section 10 in particular. The international community, therefore, opted for a strong response at the March 2015 UNHCR meeting. Moves were even afoot to impose economic sanctions.

‘Yahapalana ‘Government and the UNHRC

On 9 January 2018, the ‘Yahapalana’ President was sworn in and Foreign Minister Mangala Samaraweera asked for more time to implement the UNHRC recommendations. Most of us avoid discussing this background of the UNHCR proposals of 01 October 2015. Even today they discuss, misinterpret, and misrepresent facts.

These proposals did not fall from the sky. They were the result of the unilateral proposals first made on 27 May 2009 by the Rajapaksa government, its failure to implement them, and its lethargic, cavalier attitude and negligence. This led to the ratification of a new set of proposals recommended jointly by a core group of members of the UNHCR and the ‘Yahapalana government, to address the failures of the Rajapaksa government (2009), which was responsible for the 2009 UNHRC resolution.

The international community complied with the Yahapalana government’s request for more time. Had the Rajapaksa government responsible for Resolution 11/1 implemented the recommendations therein in an acceptable manner and responded to the feedback proposals, the country would not have faced the prospect of economic sanctions.

International pressure mounted from 2011-2014 as regards the 11/1 Resolution, and the Yahapalana government had to cooperate as regards the new proposals with the countries that supported Sri Lanka at the UNHCR. It should also be mentioned that such give-and-take policies don’t come without some disadvantages, the accountability mechanism in the 30/1 Resolution being a case in point.

The conceptual basis of the 2015 UNHCR Proposal

The 2015 proposals were based on the internationally accepted principles of reconciliation. As a first step towards initiating the truth and reconciliation process, it was proposed to establish a “Truth and Reconciliation Commission’ and an “Office on Missing Persons.” Secondly, the importance of demonstrating accountability towards the crimes endured by the affected communities was highlighted. Thirdly, it was required to establish a mechanism for reparation for the victims. Fourthly, it was proposed that constitutional guarantees by Parliament would ensure that such cruelty would not be repeated. Those were the ‘four pillars of reconciliation’.

These proposals were handed over to Prince Al Hussein, UNHCR High Commissioner by GOSL before Resolution 30/1 was tabled.

Withdrawal from UNHRC Resolution 30/1

In a way, it is unfair to blame the Yahapalana government for co-sponsoring Resolution 30/1 at the UNHCR in October 2015 although some people have taken exception to that course of action.

The current SLPP government has withdrawn from the 30/1 proposal and UNHRC’s 34/1 and 40/1 Resolutions—both more of technical nature and adopted without voting. We cannot withdraw from the resolutions or decisions taken between 2011-2014 because they are derived from the 11/1 Resolution. I believe (subject to correction since I am not a lawyer) that GOSL may argue the legality of other proposals if it wishes to withdraw from 11/1. It is the prerogative of the UNHRC to accept such a withdrawal. Even if we presume that such action is possible, the understandings reached in 2009 are still valid.

The question is whether the incumbent GOSL is still committed to implementing the 11/1 and the 27 May 2009 understandings. Since the 11/1 Resolution was unilaterally placed before the UNHRC by the GOSL after the war victory, it cannot argue that it was done under LTTE’s duress. If GOSL feels that 11/1 is now irrelevant, why doesn’t it say so? Did GOSL make the 11/1 proposal to hoodwink the UN Secretary-General? Or, was it another Medamulana ruse?

Two UNHRC resolutions call for the implementation of the LLRC’s constructive recommendations. The lack of commitment on the part of the Rajapaksa government to do so is unjustifiable.

Following the March 2021 Resolution in Geneva, the UNHRC has been empowered to “consolidate, analyze and preserve information and evidence” for “future accountability processes for gross violations of human rights or serious violations of international humanitarian law, to advocate for victims and survivors, and to support relevant judicial proceedings in the Member States with competent jurisdiction.”

However, some commentators opine that the Secretariat thus established will not be permitted to visit Sri Lanka like the Darusman Committee and that could hamper reporting. As stated earlier, information is freely available internationally. As a political columnist has aid recently, “it should not be forgotten that the Human Rights Commissioner’s office claims it already has trophy evidence which would be utilized.”

There are so many unanswered questions. But the demands made on behalf of the victims are still alive. Just a few days ago, didn’t MA Sumanthiran, MP, state so albeit in different words? It is these demands that drive the UNHCR and the European Union and even others to push GOSL against the wall.



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Retirement age for judges: Innovation and policy

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I. The Constitutional Context

Independence of the judiciary is, without question, an essential element of a functioning democracy. In recognition of this, ample provision is made in the highest law of our country, the Constitution, to engender an environment in which the courts are able to fulfil their public responsibility with total acceptance.

As part of this protective apparatus, judges of the Supreme Court and the Court of Appeal are assured of security of tenure by the provision that “they shall not be removed except by an order of the President made after an address of Parliament supported by a majority of the total number of members of Parliament, (including those not present), has been presented to the President for such removal on the ground of proved misbehaviour or incapacity”[Article 107(2)]. Since this assurance holds good for the entirety of tenure, it follows that the age of retirement should be defined with certainty. This is done by the Constitution itself by the provision that “the age of retirement of judges of the Supreme Court shall be 65 years and of judges of the Court of Appeal shall be 63 years”[Article 107(5)].

II. A Proposal for Reform

This provision has been in force ever since the commencement of the Constitution. Significant public interest, therefore, has been aroused by the lead story in a newspaper, Anidda of 13 March, that the government is proposing to extend the term of office of judges of the Supreme Court and the Court of Appeal by a period of two years.

This proposal, if indeed it reflects the thinking of the government, is deeply disturbing from the standpoint of policy, and gives rise to grave consequences. The courts operating at the apex of the judicial structure are called upon to do justice between citizens and also between the state and members of the public. It is an indispensable principle governing the administration of justice that not the slightest shadow of doubt should arise in the public mind regarding the absolute objectivity and impartiality with which the courts approach this task.

What is proposed, if the newspaper report is authentic, is to confer on judges of two particular courts, the Supreme Court and the Court of Appeal, a substantial benefit or advantage in the form of extension of their years of service. The question is whether the implications of this initiative are healthy for the administration of justice.

III. Governing Considerations of Policy

What is at stake is a principle intuitively identified as a pillar of justice.

Reflecting firm convictions, the legal antecedents reiterate the established position with remarkable emphasis. The classical exposition of the seminal standard is, of course, the pronouncement by Lord Hewart: “It is not merely of some importance, but is of fundamental importance that justice should not only be done, but should manifestly and undoubtedly be seen to be done”. (Rex v. Sussex Justices, ex parte McCarthy). The underlying principle is that perception is no less important than reality. The mere appearance of partiality has been held to vitiate proceedings: Dissanayake v. Kaleel. In particular, reasonableness of apprehension in the mind of the parties to litigation is critical: Ranjit Thakur v. Union of India, a reasonable likelihood of bias being necessarily fatal (Manak Lal v. Prem Chaud Singhvi).

The overriding factor is unshaken public confidence in the judiciary: State of West Bengal v. Shivananda Pathak. The decision must be “demonstrably” (Saleem Marsoof J.) fair. The Bar Association of Sri Lanka has rightly declared: “The authority of the judiciary ultimately depends on the trust reposed in it by the people, which is sustained only when justice is administered in a visibly fair manner”.

Credibility is paramount in this regard. “Justice has to be seen to be believed” (J.B. Morton). Legality of the outcome is not decisive; process is of equal consequence. Judicial decisions, then, must withstand public scrutiny, not merely legal technicality: Mark Fernando J. in the Jana Ghosha case. Conceived as continuing vitality of natural justice principles, these are integral to justice itself: Samarawickrema J. in Fernando v. Attorney General. Institutional integrity depends on eliminating even the appearance of partiality (Mandal Vikas Nigam Ltd. v. Girja Shankar Pant), and “open justice is the cornerstone of our judicial system”: (Sahara India Real Estate Corporation Ltd. v. SEBI).

IV. Practical Constraints

Apart from these compelling considerations of policy, there are practical aspects which call for serious consideration. The effect of the proposal is that, among all judges operating at different levels in the judicature of Sri Lanka, judges of the Supreme Court and the Court of Appeal only, to the exclusion of all other judges, are singled out as the beneficiaries of the proposal. An inevitable result is that High Court and District Judges and Magistrates will find their avenues of promotion seriously impeded by the unexpected lengthening of the periods of service of currently serving judges in the two apex courts. Consequently, they will be required to retire at a point of time appreciably earlier than they had anticipated to relinquish judicial office because the prospect of promotion to higher courts, entailing higher age limits for retirement, is precipitately withdrawn. Some degree of demotivation, arising from denial of legitimate expectation, is therefore to be expected.

A possible response to this obvious problem is a decision to make the two-year extension applicable to all judicial officers, rather than confining it to judges of the two highest courts. This would solve the problem of disillusionment at lower levels of the judiciary, but other issues, clearly serious in their impact, will naturally arise.

Public service structures, to be equitable and effective, must be founded on principles of non-discrimination in respect of service conditions and related matters. Arbitrary or invidious treatment is destructive of this purpose. In determining the age of retirement of judges of the Supreme Court and the Court of Appeal, some attention has been properly paid to balance and consistency. The age of retirement of a Supreme Court judge is on par with that applicable to university professors and academic staff in the higher education system. They all retire at 65 years. Members of the public service, generally, retire at 60. Medical specialists retire at 63, with the possibility of extension in special circumstances to 65. The age of retirement for High Court Judges is 61, and for Magistrates and District Judges 60. It may be noted that the policy change in 2022 aimed at specifically addressing the issue of uniformity and compatibility.

If, then, an attempt is made to carve out an ad hoc principle strictly limited to judicial officers, not admitting of a self-evident rationale, the question would inevitably arise whether this is fair by other categories of the public service and whether the latter would not entertain a justifiable sense of grievance.

This is not merely a moral or ethical issue relating to motivation and fulfillment within the public service, but it could potentially give rise to critical legal issues. It is certainly arguable that the proposed course of action represents an infringement of the postulate of equality of treatment, and non-discrimination, enshrined in Article 12(1) of the Constitution.

There would, as well, be the awkward situation that this issue, almost certain to be raised, would then have to be adjudicated upon by the Supreme Court, itself the direct and exclusive beneficiary of the impugned measure.

V. Piecemeal Amendment or an Overall Approach?

If innovation on these lines is contemplated, would it not be desirable to take up the issue as part of the new Constitution, which the government has pledged to formulate and enact, rather than as a piecemeal amendment at this moment to the existing Constitution? After all, Chapter XV, dealing with the Judiciary, contains provisions interlinked with other salient features of the Constitution, and an integrated approach would seem preferable.

VI. Conclusion

In sum, then, it is submitted that the proposed change is injurious to the institutional integrity of the judiciary and to the prestige and stature of judges, and that it should not be implemented without full consideration of all the issues involved.

By Professor G. L. Peiris
D. Phil. (Oxford), Ph. D. (Sri Lanka);
Former Minister of Justice, Constitutional Affairs and National Integration;
Quondam Visiting Fellow of the Universities of Oxford, Cambridge and London;
Former Vice-Chancellor and Emeritus Professor of Law of the University of Colombo.

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Ranked 134th in Happiness: Rethinking Sri Lanka’s development through happiness, youth wellbeing and resilience

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In recent years, Sri Lanka has experienced a succession of overlapping challenges that have tested its resilience. Cyclone Ditwah struck Sri Lanka in November last year, significantly disrupting the normal lives of its citizens. The infrastructure damage is much more serious than the tsunami. According to World Bank reports and preliminary estimates, the losses amounted to approximately US$ 4.1 billion, nearly 4 per cent of the country’s Gross Domestic Product. Before taking a break from that, the emerging crisis in the Middle East has once again raised concerns about potential economic repercussions. In particular, those already affected by disasters such as Cyclone Ditwah risk falling “from the frying pan into the fire,” facing multiple hardships simultaneously. Currently, we see fuel prices rising, four-day workweeks, a higher cost of living, increased pressure on household incomes, and a reduction in the overall standard of living for ordinary citizens. It would certainly affect people’s happiness. As human beings, we naturally aspire to live happy and fulfilling lives. At a time when the world is increasingly talking about happiness and wellbeing, the World Happiness Report provides a useful way of looking at how countries are doing. The World Happiness Report discusses global well-being and offers strategies to improve it. The report is produced annually with contributions from the University of Oxford’s Wellbeing Research Centre, Gallup, the UN Sustainable Development Solutions Network, and other stakeholders. There are many variables taken into consideration for the index, including the core measure (Cantril Ladder) and six explanatory variables (GDP per Capita ,Social Support,Healthy Life Expectancy,Freedom to Make Life Choices,Generosity,Perceptions of Corruption), with a final comparison.

According to the recently published World Happiness Report 2026, Sri Lanka ranks 134th out of 147 nations. As per the report, this is the first time that Sri Lanka has suffered such a decline. Sri Lanka currently trails behind most of its South Asian neighbours in the happiness index. The World Happiness Report 2026 attributes Sri Lanka’s low ranking (134th) to a combination of persistent economic struggles, social challenges, and modern pressures on younger generations. The 2026 report specifically noted that excessive social media use is a growing factor contributing to declining life satisfaction among young people globally, including in Sri Lanka. This calls for greater vigilance and careful reflection. These concerns should be examined alongside key observations, particularly in the context of education reforms in Sri Lanka, which must look beyond their immediate scope and engage more meaningfully with the country’s future.

In recent years, a series of events has triggered political upheaval in countries such as Nepal, characterised by widespread protests, government collapse, and the emergence of interim administration. Most reports and news outlets described this as “Gen Z protests.” First, we need to understand what Generation Z is and its key attributes. Born between 1997 and 2012, Generation Z represents the first truly “digital native” generation—raised not just with the internet, but immersed in it. Their lives revolve around digital ecosystems: TikTok sets cultural trends, Instagram fuels discovery, YouTube delivers learning, and WhatsApp sustains peer communities. This constant, feed-driven engagement shapes not only how they consume content but how they think, act, and spend. Tech-savvy and socially aware, Gen Z holds brands to a higher standard. For them, authenticity, transparency, and accountability—especially on environmental and ethical issues—aren’t marketing tools; they’re baseline expectations. We can also observe instances of them becoming unnecessarily arrogant in making quick decisions and becoming tools of some harmful anti-social ideological groups. However, we must understand that any generation should have proper education about certain aspects of the normal world, such as respecting others, listening to others, and living well. More interestingly, a global survey by the McKinsey Health Institute, covering 42,083 people across 26 countries, finds that Gen Z reports poorer mental health than older cohorts and is more likely to perceive social media as harmful.

Youth health behaviour in Sri Lanka reveals growing concerns in mental health and wellbeing. Around 18% of youth (here, school-going adolescents aged 13-17) experience depression, 22.4% feel lonely, and 11.9% struggle with sleep due to worry, with issues rising alongside digital exposure. Suicide-related risks are significant, with notable proportions reporting thoughts, plans, and attempts, particularly among females. Bullying remains a significant concern, particularly among males, with cyberbullying emerging as a notable issue. At the same time, substance use is increasing, including tobacco, smokeless tobacco, and e-cigarettes. These trends highlight the urgent need for targeted interventions to support youth mental health, resilience, and healthier behavioural outcomes in Sri Lanka. We need to create a forum in Sri Lanka to keep young people informed about this. Sri Lanka can designate a date (like April 25th) as a National Youth Empowerment Day to strengthen youth mental health and suicide prevention efforts. This should be supported by a comprehensive, multi-sectoral strategy aligned with basic global guidelines. Key priorities include school-based emotional learning, counselling services, and mental health training for teachers and parents. Strengthening data systems, reducing access to harmful means, and promoting responsible media reporting are essential. Empowering families and communities through awareness and digital tools will ensure this day becomes a meaningful national call to action.

As discussed earlier, Sri Lanka must carefully understand and respond to the challenges arising from its ongoing changes. Sri Lanka should establish an immediate task force comprising responsible stakeholders to engage in discussions on ongoing concerns. Recognising that it is not a comprehensive solution, the World Happiness Index can nevertheless act as an important indicator in guiding a paradigm shift in how we approach education and economic development. For a country seeking to reposition itself globally, Sri Lanka must adopt stronger, more effective strategies across multiple sectors. Building a resilient and prosperous future requires sound policymaking and clear strategic direction.

(The writer is a Professor in Management Studies at the Open University of Sri Lanka. You can reach Professor Abeysekera via nabey@ou.ac.lk)

by Prof. Nalin Abeysekera

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Hidden diversity in Sri Lanka’s killifish revealed: New study reshapes understanding of island’s freshwater biodiversity

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Aplocheilus parvus

A groundbreaking new study led by an international team of scientists, including Sri Lankan researcher Tharindu Ranasinghe, has uncovered striking genetic distinctions in two closely related killifish species—reshaping long-standing assumptions about freshwater biodiversity shared between Sri Lanka and India.

Published recently in Zootaxa, the research brings together leading ichthyologists such as Hiranya Sudasinghe, Madhava Meegaskumbura, Neelesh Dahanukar and Rajeev Raghavan, alongside other regional experts, highlighting a growing South Asian collaboration in biodiversity science.

For decades, scientists debated whether Aplocheilus blockii and Aplocheilus parvus were in fact the same species. But the new genetic analysis confirms they are “distinct, reciprocally monophyletic sister species,” providing long-awaited clarity to their taxonomic identity.

Speaking to The Island, Ranasinghe said the findings underscore the hidden complexity of Sri Lanka’s freshwater ecosystems.

“What appears superficially similar can be genetically very different,” he noted. “Our study shows that even widespread, common-looking species can hold deep evolutionary histories that we are only now beginning to understand.”

A tale of two fishes

The study reveals that Aplocheilus blockii is restricted to peninsular India, while Aplocheilus parvus occurs both in southern India and across Sri Lanka’s lowland wetlands.

Despite their close relationship, the two species show clear genetic separation, with a measurable “genetic gap” distinguishing them. Subtle physical differences—such as the pattern of iridescent scales—also help scientists tell them apart.

Co-author Sudasinghe, who has led several landmark studies on Sri Lankan freshwater fishes, noted that such integrative approaches combining genetics and morphology are redefining taxonomy in the region.

Echoes of ancient land bridges

The findings also shed light on the ancient biogeographic links between Sri Lanka and India.

Scientists believe that during periods of low sea levels in the past, the two landmasses were connected by the now-submerged Palk Isthmus, allowing freshwater species to move between them.

Later, rising seas severed this connection, isolating populations and driving genetic divergence.

“These fishes likely dispersed between India and Sri Lanka when the land bridge existed,” Ranasinghe said. “Subsequent isolation has resulted in the patterns of genetic structure we see today.”

Meegaskumbura emphasised that such patterns are increasingly being observed across multiple freshwater fish groups in Sri Lanka, pointing to a shared evolutionary history shaped by geography and climate.

A deeper genetic divide

One of the study’s most striking findings is that Sri Lankan populations of A. parvus are genetically distinct from those in India, with no shared haplotypes between the two regions.

Dahanukar explained that this level of differentiation, despite relatively recent geological separation, highlights how quickly freshwater species can diverge when isolated.

Meanwhile, Raghavan pointed out that these findings reinforce the importance of conserving habitats across both countries, as each region harbours unique genetic diversity.

Implications for conservation

The study carries important implications for conservation, particularly in a country like Sri Lanka where freshwater ecosystems are under increasing pressure from development, pollution, and climate change.

Ranasinghe stressed that understanding genetic diversity is key to protecting species effectively.

“If we treat all populations as identical, we risk losing unique genetic lineages,” he warned. “Conservation planning must recognise these hidden differences.”

Sri Lanka is already recognised as a global biodiversity hotspot, but studies like this suggest that its biological richness may be even greater than previously thought.

A broader scientific shift

The research also contributes to a growing body of work by scientists such as Sudasinghe and Meegaskumbura, challenging traditional assumptions about species distributions in the region.

Earlier studies often assumed that many freshwater fish species were shared uniformly between India and Sri Lanka. However, modern genetic tools are revealing a far more complex picture—one shaped by ancient geography, climatic shifts, and evolutionary processes.

“We are moving from a simplistic view of biodiversity to a much more nuanced understanding,” Ranasinghe said. “And Sri Lanka is proving to be a fascinating natural laboratory for this kind of research.”

Looking ahead

The researchers emphasise that much remains to be explored, with several freshwater fish groups in Sri Lanka still poorly understood at the genetic level.

For Sri Lanka, the message is clear: beneath its rivers, tanks, and wetlands lies a largely untapped reservoir of evolutionary history.

As Ranasinghe puts it:

“Every stream could hold a story of millions of years in the making. We are only just beginning to read them.”

By Ifham Nizam

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