Phalloceros caudimaculatus

Phalloceros caudimaculatus (Hensel, 1868) is a species of actinopterygii belonging to the family Poeciliidae (order Cyprinodontiformes).

Common name. In English this species is commonly known as the dusky millions fish.

Taxonomy. The scientific name Phalloceros caudimaculatus (Hensel, 1868) places this species within the actinopterygii lineage, among the most diverse vertebrates on Earth.

Description & ecology. As a member of Cyprinodontiformes, Phalloceros caudimaculatus exhibits the group's characteristic adaptations: They are small freshwater and brackish fishes; livebearers give birth to live young. Its biology reflects the demands of its particular habitat and life history within the family Poeciliidae.

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

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