Biology:Hisonotus acuen

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Short description: Species of fish

Hisonotus acuen
Hisonotus acuen-442-105-g006.jpg
Hisonotus acuen-442-105-g001 (3).jpg
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Genus: Hisonotus
Species:
H. acuen
Binomial name
Hisonotus acuen
Silva, Roxo & Oliveira, 2014 [1]
H. acuen range map.jpg
Range map for H. acuen

Hisonotus acuen is a species of armored catfish from the Xingu River in Brazil .[2]

Etymology

The species name is taken from "acuen", the name used in anthropological literature to refer to the indigenous Xavante people.[2]

Description

The species bears a resemblance to H. chromodontus, being distinguished by the yellow as opposed to reddish-brown color of its teeth and the transparency of the tail fin.[2]

H. acuen grows to a maximum length of 29 millimeters. The head is rounded, with small eyes and round lips.[2]

General body coloration is light brown on the dorsal and yellowish on the ventral surface, the two colors being divided by a brown stripe that runs from the snout to the caudal peduncle. The fins are transparent with brown dots on the rays. The tail fin is transparent except for a dark spot at the base.[2]

Males have a genital papilla, a feature missing in females.[2]

Features can vary widely among populations, with the most variation occurring in the body's depth at the dorsal fin and in the snout and abdomen length.[2]

Range and habitat

H. acuen is found in small streams that are part of the Xingu River basin in Matto Grosso, Brazil . Individuals are usually found in shallow, slow flowing water. Streams they inhabit are usually flat-bottomed and clear, with vegetation covering the streambed.[2]

References

Wikidata ☰ Q18349593 entry