Author: (Steindachner, 1877)
FBname: Blue tetra
Remark: No recent species description, but see Weitzman et al. (1988) & Menezes & Weitzman (1990) for identification and relationships.  See Burns et al. (1995) for evidence of insemination.  See Nelson (1964a) for discussion of courtship behavior.
Comments: Inhabit small to moderate-sized streams or rivers (Ref. 30267).  Aquarium specimens reach 9.0 cm TL (Ref. 30267).  Mature females keep live sperm cells in their ovary through insemination which occurs during the dry season (Ref. 84543).  Spawning period coincides with the rainy season to ensure increased survival of offsprings (Ref. 84543).