The Dolphin Catfish, (''Hypophthalmus fimbriatus''), is a
species of
demersal
The demersal zone is the part of the sea or ocean (or deep lake) consisting of the part of the water column near to (and significantly affected by) the seabed and the benthos. The demersal zone is just above the benthic zone and forms a layer of ...
potamodromous catfish of the family
Pimelodidae
The Pimelodidae, commonly known as the long-whiskered catfishes, are a family of catfishes ( order Siluriformes).
Taxonomy
The family Pimelodidae has undergone much revision. Currently, it contains about 30 genera and about 90 recognized and kno ...
that is native to Santarém and the Negro River basin of Brazil and Venezuela.
Description
It grows to a length of 30.0 cm. Clearly distinguished by elongate, flat and thick mental barbels. Caudal fin deeply forked.
Ecology
It inhabits mostly blackwater rivers. It is largely zooplanktivorous specially
cladocerans.
References
External links
Morphological development of Hypophthalmus fimbriatus and H. marginatus post-yolk-sac larvae (Siluriformes: Pimelodidae)
{{Taxonbar, from=Q6405453
Pimelodidae
Catfish of South America
Fish described in 1858