Smalleye Round Ray

Urotrygon microphthalmum, commonly known as the smalleye round stingray, is a marine cartilaginous fish belonging to the family Urotrygonidae. This species is endemic to the eastern Pacific Ocean, with its range primarily concentrated along the Pacific coast of Central America, particularly in waters off Guatemala, El Salvador, Honduras, and Nicaragua. The smalleye round stingray is characterized by its distinctive small eyes and rounded disc shape, typical of round stingrays.

As a benthic species, it inhabits shallow coastal waters where it feeds on small invertebrates and crustaceans found in sandy and muddy substrates. The species faces severe population declines that have led to its classification as Critically Endangered by the IUCN. Primary threats include intensive fishing pressure from both targeted and incidental capture in artisanal and commercial fisheries operating within its limited range.

Coastal development and habitat degradation further compound the pressures on remaining populations. The species' restricted geographic distribution makes it particularly vulnerable to localized threats and environmental changes. Limited reproductive capacity, common among elasmobranchs, hampers population recovery efforts.

Conservation initiatives for this species remain limited, with most regional fisheries management focusing on commercially important species rather than endemic rays. Improved fisheries monitoring, habitat protection measures, and species-specific conservation strategies are needed to prevent further population decline and potential extinction of this endemic Central American stingray.

This species inhabits shallow coastal waters along the eastern Pacific, typically found on sandy and muddy bottoms in nearshore marine environments. It prefers benthic habitats where it can forage for small invertebrates and crustaceans.