Attonitus irisae Vari & Ortega, 2000

Family:  Characidae (Characins; tetras), subfamily: Stevardiinae
Max. size:  4.62 cm SL (male/unsexed)
Environment:  pelagic; freshwater
Distribution:  South America: Aguaytia and Pachitea rivers in the Ucayali River basin.
Diagnosis:  Dorsal soft rays (total): 10-10; Anal soft rays: 14-20. The possession of a dark, vertically elongate humeral bar in mid-sized and larger specimens or the presence of a diffuse patch of chromatophores in that region in the smaller individuals examined distinguishes Attonitus irisae from Attonitus bounites and Attonitus ephimeros. Dorsal fin with 2 unbranched and 8 branched ray. Anal fin with 3 unbranched and 14-17, most commonly 15-16, branched rays (Ref 53400).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 21 April 2014 Ref. (130435)
Threat to humans:  harmless


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