Astronotus crassipinnis (Heckel, 1840)
photo by Font, F./Gavin-Häuser, F.G.

Family:  Cichlidae (Cichlids), subfamily: Astronotinae
Max. size:  24 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: southern parts of the Amazon (upper Madeira River) and the upper Paraguay basins; introduce elsewhere.
Diagnosis:  Dorsal soft rays (total): 16-24; Anal soft rays: 15-21. This species is distinguished from its congeners by the following characters: 2 supraneural bones; spinous process (hypurapophysis) on the anterosuperior border of the parahypural bone (hypural complex); sagitta otolith elliptical and smooth-lobed margins, rostrum process short, posterior region of the otolith straight or flat, the aspect ratio of sagitta otoliths AR = 0.585, the roundness index Rd = 0.543; morphometric index 0.735: mean head length 35.01% SL, mean diameter of the orbit 7.73% SL, mean pre-orbital depth 0.14% SL, mean snout length 5.36% SL (Ref. 126783).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 04 November 2020 Ref. (130435)
Threat to humans:  harmless


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