Entomocorus radiosus is diagnosed by the unique
combination of a long anal-fin base, 18–22 branched
anal-fin rays, unpigmented pectoral and pelvic fins,
and caudal fin hyaline, with distal half of dorsal
and ventral lobes pigmented with black. Specimens
were collected from a creek and in wide open environments,
as river channels and bays of the upper Rio Paraguay
basin in the periodically flooded areas known as the
Pantanal. Known to be a zooplanktivore which also
eats insects. Stomach contents predominantly has microcrustaceans
(cladocerans, copepods and ostracods); insects (ephemeropterans,
coleopterans and hemipterans); and/or small amounts
of water mites, rotifers, fish scales, bryozoans,
unidentified eggs, detritus, and sand. Reproduction:
This species spawns in July and August in the period
of maximal annual flooding. Sexual Differences:The males have elongated ventral fins and
the dorsal becomes long and curved. Aquarium
Care: Inactive during the day so would need
feeding at night but as aquarists know this family
will find food that has been left during daytime feedings.
Diet: Not a fussy eater. Mosquito
larvae, artemia, flakefood, tablet and pellet foods.
South America:Rio Paraguay.
Ferraris, C.J. Jr.,
2007. Checklist of catfishes, recent and fossil (Osteichthyes:
Siluriformes), and catalogue of siluriform primary
types. Zootaxa 1418:1-628.
Froese, R. and D. Pauly. Editors. 2019. FishBase.
World Wide Web electronic publication. www.fishbase.org,
( 08/2019 ). Reis, R.E. and T.A.K.
The South American catfish genus Entomocorus (Ostariophysi:
Siluriformes: Auchenipteridae), with the description
of a new species from the Paraguay River Basin. Copeia