''Pterolebias zonatus'' is a species of fish in the family

Aplocheilidae Aplocheilidae, the Asian killifishes or Asian rivulines, is a family of fish in the order Cyprinodontiformes found in Asia. Some authorities use this family-group name, which is well-established, for a single lumped aplocheiloid family as it giv ...

endemic to the Orinoco River basin in Venezuela where it is found in open waters exposed to sunlight. This species grows to a length of . It is found in the

aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ...

trade. This species is often included in the genus '' Gnatholebias'', of which it has been designated the type species. This species, and '' Pterlolebias hoignei'', are rather distantly related to the other species in ''Pterolebias'' and some workers argue that their inclusion in that genus makes it

paraphyletic In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be pa ...

References

Rivulidae Monotypic fish genera Fish described in 1935 Taxa named by George S. Myers {{Cyprinodontiformes-stub