The Veil of Waters and the Shadow of Introduction: A Philosophical Meditation on Exotic Ichthyofauna in the Philippine Archipelago
The Veil of Waters and the Shadow of Introduction: A Philosophical Meditation on Exotic Ichthyofauna in the Philippine Archipelago
Amiel Gerald A. Roldan™
August 16, 2026
In the liminal spaces where human desire intersects with the aqueous continuum of the Philippine archipelago—those lacustrine mirrors, fluvial arteries, and brackish estuaries that constitute one of the planet’s most intricate hydrological lattices—there arises a profound question of ontological propriety. The deliberate introduction, farming, propagation, and containment of certain exotic fishes—snakehead (*Channa* spp.), piranha (*Pygocentrus* and allies), walking catfish (*Clarias batrachus* and kin), Asian arowana (*Scleropages formosus*), pacu (*Colossoma* and *Piaractus*), peacock bass (*Cichla*), clown knifefish (*Chitala ornata*), alligator gar (*Atractosteus spatula*), electric catfish (*Malapterurus*), and the various giant catfishes—represents not merely a technical or regulatory dilemma, but a metaphysical rupture. These organisms, each bearing the marks of evolutionary histories forged in distant basins (the Amazon, the Mekong, the Yangtze, the Mississippi), become agents of a human-mediated reconfiguration of being. Their potential translocation into Philippine waters enacts a drama of presence and absence, of belonging and exile, that demands an esoteric, philosophical reckoning.
The Philippines, an archipelago of extraordinary endemism and hydrological complexity, already bears the scars of prior introductions. Clown knifefish have established invasive populations in Laguna de Bay, preying upon cultured milkfish and tilapia; walking catfish and certain snakeheads have dispersed across lowland systems; risk assessments employing tools such as the Aquatic Species Invasiveness Screening Kit consistently rank many of the listed taxa as high or very high risk under both current and projected climatic regimes. Yet the deeper issue transcends empirical risk matrices. It concerns the very nature of ecological identity and the ethics of human authorship over biotic assemblages.
Consider the snakehead and the walking catfish. Both embody a radical plasticity of form and function: the capacity to breathe atmospheric air, to traverse terrestrial barriers, to persist in hypoxic or fluctuating environments. In philosophical terms, they instantiate a kind of ontological opportunism—an excess of adaptive potential that, when released from the constraints of their native assemblages, becomes a force of homogenization. The walking catfish’s terrestrial locomotion dissolves the boundary between aquatic and terrestrial realms, mocking the human cartography that seeks to segregate waterways. To farm or propagate such beings in Philippine systems is to invite a dissolution of local ecological singularities into a globalized flux of resilient generalists. This is not merely biological invasion; it is an assault upon the principle of place-bound becoming, the Heideggerian sense of dwelling (*Wohnen*) that binds organisms to their historical lifeworlds.
The piranha and peacock bass, by contrast, represent the predatory sublime. Their introduction raises the specter of trophic cascades as ontological violence. In the dense, co-evolved food webs of Philippine lakes and rivers—already stressed by habitat fragmentation, pollution, and climate shifts—these apex or mesopredators function as agents of erasure. They do not merely compete; they rewrite the narrative of who may persist. From a deep-ecological perspective (Naess, Sessions), such introductions violate the intrinsic value of native biotic communities, reducing complex evolutionary achievements to consumable biomass or aquarium spectacle. The pacu, often marketed as a “vegetarian piranha,” further complicates the picture: its herbivorous or omnivorous bulk can transform vegetated littoral zones, altering habitat structure for native cyprinids, gobies, and endemic siluriforms. Size itself becomes a philosophical problem: the giant catfishes and alligator gar grow beyond the scale of domestic containment, rendering the aquarium a temporary illusion and the eventual release an almost inevitable act of ecological abdication.
The Asian arowana occupies a different register. Protected in its native range due to overcollection, its prohibition on importation in jurisdictions such as the United States reflects a conservation ethic that prioritizes wild populations. Yet the very desirability that drives its trade—its metallic sheen, its “dragon fish” mythology—reveals the human propensity to extract and commodify the numinous. To keep or propagate arowana in Philippine waters risks both genetic contamination of any residual native osteoglossids and the reinforcement of a collector’s ethos that treats living beings as status objects rather than co-inhabitants of a shared biosphere. The electric catfish, with its bioelectric discharges, adds a further layer of alterity: an organism whose sensory and defensive world is structured by fields invisible to human perception, yet capable of disrupting the electroreceptive or behavioral ecology of native species.
Collating these taxa reveals a common pattern: each possesses traits that amplify the probability of establishment and impact once the containment of aquaculture or the aquarium is breached—air-breathing, parental care, high fecundity, broad environmental tolerance, large body size, or specialized predation. In the Philippine context, where seasonal flooding, typhoon-driven inundation, and porous aquaculture infrastructure routinely facilitate escape, the boundary between “kept” and “released” is porous. The regulatory apparatus (Fisheries Code provisions requiring ecological justification for foreign aquatic introductions, BFAR risk assessments, Wildlife Act restrictions on certain exotics) acknowledges this porosity, yet enforcement remains incomplete, and the ornamental trade continues to introduce high-risk horizon species.
Philosophically, the question of introduction forces a confrontation between anthropocentric utility and biocentric or ecocentric integrity. From a consequentialist standpoint, one might weigh potential protein yields or ornamental commerce against biodiversity loss and ecosystem service degradation. From a deontological perspective, the act of introducing a known high-risk species into a biodiversity hotspot constitutes a violation of the duty to preserve evolutionary heritage and the precautionary principle. Virtue ethics asks what kind of character is cultivated by a society that repeatedly prioritizes novelty and profit over the quiet persistence of endemic forms. Deep ecology and indigenous Philippine cosmologies—many of which regard water bodies as living persons or ancestral domains—further suggest that such introductions desecrate relational ontologies in which humans are not sovereign authors but participants in a more-than-human community.
Climate change intensifies the stakes. Warming temperatures and altered hydrology may expand the thermal and hydrological niches available to tropical invaders, transforming currently marginal risks into near-certainties. The Philippines, as a mega-biodiverse nation and a party to the Convention on Biological Diversity, is thus called to a form of ecological sobriety: a refusal of the technological hubris that treats waterways as blank canvases for biotic experimentation.
Summative Conclusion
To introduce, farm, propagate, or casually keep these ten categories of exotic fishes in Philippine waterways is to enact a profound philosophical error—the conflation of human will with ecological wisdom, the substitution of transient economic or aesthetic desire for the patient, place-specific unfolding of evolutionary time. These organisms are not neutral commodities; they are vectors of ontological disruption, capable of unraveling the singular assemblages that constitute the archipelago’s aquatic identity. The empirical record of prior invasions (clown knifefish in Laguna de Bay, walking catfish displacement of native *Clarias*, the persistent threat of snakeheads and pacus) demonstrates that containment is illusory and that ecological memory is long. Philosophically, the act reveals a failure of restraint, a forgetting of the limits that make dwelling possible. The appropriate response is not merely stricter regulation—though that is necessary—but a deeper reorientation: an ethics of non-introduction grounded in the recognition that the waters of the Philippines are already densely inhabited by beings whose histories and futures are interwoven with the land and the people in ways that no exotic predator, air-breather, or giant can honorably replace. In the end, the true cultivation required is not of foreign fishes, but of the humility that allows native systems to persist, uncolonized by the shadows of elsewhere.
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Amiel Gerald A. Roldan™' s connection to the Asian Cultural Council (ACC) serves as a defining pillar of his professional journey, most recently celebrated through the launch of the ACC Global Alumni Network.As a 2003 Starr Foundation Grantee, Roldan participated in a transformative ten-month fellowship in the United States. This opportunity allowed him to observe contemporary art movements, engage with an international community of artists and curators, and develop a new body of work that bridges local and global perspectives.Featured Work: Bridges Beyond Borders His featured work, Bridges Beyond Borders: ACC's Global Cultural Collaboration, has been chosen as the visual identity for the newly launched ACC Global Alumni Network.Symbol of Connection: The piece represents a private collaborative space designed to unite over 6,000 ACC alumni across various disciplines and regions.Artistic Vision: The work embodies the ACC's core mission of advancing international dialogue and cultural exchange to foster a more harmonious world.Legacy of Excellence: By serving as the face of this initiative, Roldan's art highlights the enduring impact of the ACC fellowship on his career and his role in the global artistic community.Just featured at https://www.pressenza.com/2026/01/the-asian-cultural-council-global-alumni-network-amiel-gerald-a-roldan/
He is a Filipino multidisciplinary visual artist, printmaker, painter, independent curator, researcher, writer, and cultural worker whose practice spans contemporary art, curatorial work, and cultural advocacy. He has been active in the Philippine art scene since the late 1990s and has worked with galleries, museums, artist-run spaces, and international cultural organizations.
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A multidisciplinary Filipino artist, poet, researcher, and cultural worker whose practice spans painting, printmaking, photography, installation, and writing. He is deeply rooted in cultural memory, postcolonial critique, and in bridging creative practice with scholarly infrastructure—building counter-archives, annotating speculative poetry like Southeast Asian manuscripts, and fostering regional solidarity through ethical art collaboration.
He has been active in the Philippine art scene since the late 1990s and has worked with galleries, museums, artist-run spaces, and international cultural organizations.His practice appears to represent several interconnected concerns:
Cultural work as artistic practice. Roldan has argued that the labor of curating, organizing exhibitions, teaching, documentation, and cultural administration should be understood as creative work rather than merely support work. This perspective has been reflected in his writings and exhibitions.
Social and political engagement. His artworks frequently address politics, religion, faith, denial, courage, social inequality, and the everyday experiences of Filipinos. He has stated that he draws inspiration from Filipino cultural practices while approaching painting, printmaking, and installation from a conceptual perspective.Printmaking and conceptual art.Roldan is particularly recognized for his printmaking, with works shown internationally, including exhibitions in Japan and France. His practice also encompasses painting, photography, installation, and curatorial research.International cultural exchange. A significant milestone in his career was receiving an Asian Cultural Council fellowship in 2003, which enabled him to undertake research and create work in the United States while engaging with artists and curators internationally.
More broadly, Roldan's work represents an attempt to bridge artistic production, curatorial practice, scholarship, and cultural activism . His writings often emphasize postcolonial discourse, cultural memory, and the ethics of artistic collaboration, positioning the artist not only as a maker of objects but also as a builder of cultural infrastructure.
In the Philippine contemporary art context, he can be understood as representing the figure of the artist-curator-cultural worker —someone who contributes both through making artworks and through developing exhibitions, mentoring artists, and fostering institutional and independent cultural initiatives.
Recent show at ILOMOCA
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