Hemibrycon helleri Eigenmann, 1927

Family:  Characidae (Characins; tetras), subfamily: Stevardiinae
Max. size:  10 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Amazon River basin and the Urubamba, Comberciato, and Crisnejas rivers in Peru.
Diagnosis:  Dorsal soft rays (total): 8-8; Anal soft rays: 19-23; Vertebrae: 41-43. This species is distinguished from its congeners, except H. jelskii, by the size of humeral spot over 7-8 horizontal series of scales (vs. 3-6). H. helleri differs from H. jelskii by the number of branched anal-fin rays (19-23 vs. 25-30), and number of scales along anal-fin base scale sheath (6-12 vs. 13-28). It is rather similar to H. inambari, but can be distinguished by the size of humeral spot (over 7-8 vs. 5-6 horizontal series of scales), number of predorsal scales (16-18 vs. 13-16), and by the total number of vertebrae (41-43 vs. 39-40) (Ref. 85819).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 23 April 2014 Ref. (130435)
Threat to humans:  harmless


Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.