Rivulus formosensis

The Rivulus formosensis lives in the benthopelagic, freshwater, pH range: 5.6 environment.

The new species, named Rivulus formosensis is a member of the subgenus Melanorivulus, and is distinguished from other members of the subgenus in having the males with red marks on flanks arranged in a chevron-like pattern with branching on the upper portion forming Y-shaped marks. More

Order : Cyprinodontiformes
Family : Rivulidae
Genus : Rivulus
Species : Rivulus formosensis
Authority : Costa, 2008