Phenacostethus trewavasae

Phenacostethus trewavasae Parenti, 1986 is a species of actinopterygii belonging to the family Phallostethidae (order Atheriniformes).

Taxonomy. The scientific name Phenacostethus trewavasae Parenti, 1986 places this species within the actinopterygii lineage, among the most diverse vertebrates on Earth.

Description & ecology. As a member of Atheriniformes, Phenacostethus trewavasae exhibits the group's characteristic adaptations: They are small silvery schooling fishes of coasts and fresh water, including rainbowfishes. Its biology reflects the demands of its particular habitat and life history within the family Phallostethidae.

Distribution. The species occurs within the natural range of its lineage; precise localities and depth preferences are documented in the taxonomic literature for Phallostethidae.

Human relevance. Like many fishes, it may be of interest to fisheries, aquaculture, the aquarium trade, or conservation, depending on its abundance and distribution.