radius (lat.) - rod, fin-ray; -osus (lat.) - fullness, abundance; because the many anal-fin rays
Synonyms
unknown
Length (total)
approx. 8 cm
Standard length (documented)
51.0 mm
Recommended tank size
60 cm
Mato Grosso, Mato Grosso do Sul
Brazil
Rio Paraguai ➙ río Paraguay ⇒ río Paraná ➙ río de la Plata ➙ Atlantic SE
[ -16.049,-57.712 ]
microcrustaceans, beetle (Coleoptera), ephemeroptera (Ephemeroptera), inverbrates (invertebrates ), nymphs, Bryozoen (Bryozoen), water mites (Hydrachnidiae), rotifers (Rotifera), detritus, (sand)
Eats plants
not known
unknown
 
present
v - vi / (7 -) 19 - 22 rays
7 + 7-8 soft rays
greatly incised / concave, pointed
little longer at the top than at the bottom
I / 5 rays
(7 -) 8 soft rays
6 soft rays
v - vi / (7 -) 19 - 22 rays
7 + 7-8 soft rays
greatly incised / concave, pointed
little longer at the top than at the bottom
I / 5 rays
(7 -) 8 soft rays
6 soft rays
Not on the positive list of Brazil in 2012 : The positive list of Brazil
Not on the negative list of Brazil from 2020 : The negative list of Brazil
Not on the negative list of Brazil from 2020 : The negative list of Brazil
- Reis, R.E. & Borges, T.A.K., 2006 "The South American catfish genus Entomocorus (Ostariophysi: Siluriformes: Auchenipteridae), with the description of a new species from the Paraguay River basin" (Copeia, Vol. 2006 No. 3, P. 412)
- Ferraris, C.J. jr., 2007 "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types (II)" (Zootaxa, Vol. 1418, P. 443)
- Birindelli, José L.O., 2014 "Phylogenetic relationships of the South American Doradoidea (Ostariophysi: Siluriformes)" (Neotropical Ichthyology, Vol. 12 No. 3, P. 535)
- Gimênes Junior, H. & Rech, R. , 2022 "Guia ilustrado dos peixes do Pantanal e entorno"
- PCF
Many thanks to
for the pictures
MiltonT (CC BY-SA 3.0)
1, 2
Please help with your pictures and information to complete the database: database(at)welsfans.de
Link: https://www.suedamerikafans.de/en/wels-datenbank/welsart/?art=1771
1771
29.09.2025