Ecsenius tigris

Ecsenius tigris is a small blenny distinguished by an elongated, tapering body and bold, tiger-like striping or blotched patterning that gives the species its common name. Like other members of the genus, it is a benthic, substrate-associated fish, typically observed perching on or near reef structure, rubble, or coral heads. It feeds primarily on algae and detritus scraped from hard surfaces, a grazing habit that contributes to controlling algal growth on reef substrates and helps maintain the balance between coral and algal cover in its habitat.

The species is found in shallow marine coastal waters across parts of the western and southern Pacific, with confirmed occurrences in the Marshall Islands, Vanuatu, Australia, and Papua New Guinea. It inhabits coral reef and associated coastal/supratidal environments, generally in shallow, structurally complex zones where it can shelter within crevices and rubble.

Ecsenius tigris is classified as Vulnerable, though its population trend is currently unknown, limiting precise assessment of trajectory. Threats to the species include ongoing fishing and harvesting of aquatic resources, which can degrade reef habitat and disrupt the fine-scale substrate structures the species depends on, as well as gathering of terrestrial plants in adjacent coastal zones, which may contribute to habitat alteration and coastal degradation affecting nearshore reef conditions.

Specific targeted conservation programs for this species have not been widely documented; its protection is likely linked to broader marine protected area networks and reef management efforts within its range countries. Given the combination of ongoing habitat-related pressures and the absence of clear population data, the species' long-term outlook remains uncertain, underscoring a need for further monitoring and habitat-focused conservation attention.