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Hemiancistrus medians (Kner, 1854)

Image contributors to this species:

Flair Wang (1) Suramerica Fish (2) Raphael Covain (1) Karsten Schönherr (1)

ScotCat Sources:

Etymology = Genus

Other Sources:

Fishbase  Google Search  All Catfish Species Inventory 

Relevant Information:

Lives in the main jets of rapids where the current is very strong. The substrate consists of bulky rocks which gives them shelter. Occurs together with the following species: Leporinus granti, Astyanax meunieri, Bryconops caudomaculatus; Parodon guyanensis, Harttia surinamensis, Hypostomus gymnorhynchus, Lasiancistrus brevipinnis and Heptapterus longior. Aquarium Care: Good aquarium habitants for a large tank and you can also house more than one species. They like water movement in the aquarium. Diet: Mainly a vegetarian diet but can also be fed tablet foods and frozen and live foods such as mosquito larvae, brine shrimp and shrimps. Remarks: Hemiancistrus is also known in some literature as Ancistomus but is also similar to the Peckoltia genera but has a longer body and a naked ventral region.

Common Name:



Ancistrus medians




South America: Rivière Marouini, Maroni system, French Guiana.


34.0cm. (13¾ins)


25-29°c (77-85°f.)




Fisch-Muller, S., 2003. Loricariidae-Ancistrinae (Armored catfishes). p. 373-400. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.
Froese, R. and D. Pauly. Editors. 2016.FishBase. World Wide Web electronic publication. www.fishbase.org, ( 10/2016 )
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628
Le Bail, P.-Y., P. Keith and P. Planquette, 2000. Atlas des poissons d'eau douce de Guyane. Tome 2, Fascicule II: Siluriformes. Collection Patrimoines Naturels 43(II): 307p. Paris: Publications scientifiques du Muséum national d'Histoire naturelle.



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