Results for “pterygiophore”
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Colomesus tocantinensis
Amaral, Brito, Silva & Carvalho, 2013
Max length35mm SL1.4in SLTanknot recordedTempnot recordedpHnot recordedIt is distinguished from congeners by the following combination of characters: anal-fin with 6-7 basal pterygiophores and 9 rays (vs. 10-11 rays in C. asellus and C. psittacus; dorsal-fin with 10 bas...
Pygocentrus pirayaPiraya
Cuvier, 1819
Max length350mm SL14in SLTanknot recordedTemp20–28°C68–82°FpH6.0–8.0Following Fink (1993), P. piraya can be distinguished from congeners by the following combination of characters: adipose fin with rays in larger specimens (vs. always without rays in other Pygocentrus species); branched dorsal-fin rays 15-18, usually 16 (vs. 14-18, usually 15); usually 7 neural spines anterior to first pterygiophore (vs. usually 6); vertebrae 36-39, usually 38 (vs. 35-38, usually 36). It can also be identified by colour pattern since it possesses distinctive bright yellow-orange pigmentation on the lower jaw, opercle and lateral body in life.