Hemibrycon sanjuanensis

Hemibrycon sanjuanensis
Not evaluated (IUCN 3.1)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Characidae
Genus: Hemibrycon
Species: H. sanjuanensis
Binomial name
Hemibrycon sanjuanensis
Román-Valencia, Ruiz-Calderón, Taphorn & García-Alzate, 2014
Range of H. sanjuanensis

Hemibrycon sanjuanensis is a species of characin from the upper San Juan River, Colombia.[1]

Etymology

It takes its name from the San Juan River, where specimens were collected.[1]

Description

Individuals range between 21.3–84.9 millimetres (0.84–3.34 in) in length. The body is slender and long, with a short, compressed face and flexible lips. In an example of sexual dimorphism, the rays of males' pelvic and anal fins are lined with small hooks.[1]

General coloration is a dark brownish-yellow, with a dark stripe running from directly behind the gills to the caudal peduncle. The ventral surface is light yellow. The dorsum and fins are patterned with melanophores. A reddish spot can be observed on the ventral part of the base of the caudal fin.[1]

Range and habitat

H. sanjuanensis is believed to be endemic to the upper San Juan River in Colombia. Specimens were recovered from clear, fast-flowing streams with sandy or rocky bottoms.[1]

Diet

The species is insectivorous. Among other things, it has been known to eat water scavenger beetles, black flies, flesh flies, damselflies, predaceous diving beetles, caddisflies, nematodes, and isopods.[1]

References

  1. 1 2 3 4 5 6 Román-Valencia, C., Ruiz-Calderón, R.I., Taphorn, D.C. & García-Alzate, C.A. (2014). "A new species of Hemibrycon (Characiformes, Characidae) from the upper San Juan River drainage, Pacific versant, Colombia". ZooKeys. 454: 109–125. doi:10.3897/zookeys.454.6954.


This article is issued from Wikipedia - version of the 2/2/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.