Petroleuciscus squaliusculus

Petroleuciscus squaliusculus (Kessler, 1872) is a species of actinopterygii belonging to the family Leuciscidae (order Cypriniformes).

Taxonomy. The scientific name Petroleuciscus squaliusculus (Kessler, 1872) places this species within the actinopterygii lineage, among the most diverse vertebrates on Earth.

Description & ecology. As a member of Cypriniformes, Petroleuciscus squaliusculus exhibits the group's characteristic adaptations: They are soft-rayed freshwater fishes with pharyngeal teeth and a Weberian apparatus; most lack jaw teeth. Its biology reflects the demands of its particular habitat and life history within the family Leuciscidae.

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

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