| Family: |
Characidae (Characins; tetras), subfamily: Stevardiinae |
| Max. size: |
9 cm SL (male/unsexed) |
| Environment: |
benthopelagic; freshwater; depth range 0 - 1 m |
| Distribution: |
South America: Rio Uruguay basin in Argentina. |
| Diagnosis: |
Differs from other species of the genus by the following combination of characters: 17-21 branched anal fin rays, predorsal length (52.5-55.4% SL), preventral length (47.8-51.0% SL), preanal length (63.0-68.8% SL), caudal peduncle length (12.3-14.3% SL) and eye diameter (33.1-37.0% HL). Further differs by having seven to ten dentary teeth decreasing in size gradually, inner premaxillary teeth wider distally; one vertically elongated black humeral spot, separated from a second posterior one by 3 or 4 scales; narrow lateral band becoming wider below middle of dorsal fin base (Ref. 55781). |
| Biology: |
Occurs in rapids and small falls with clear flowing water, pools and some areas with slow current (Ref. 55781). The depth of the streams ranges from 0.40 to 1.3 m and the bottom is composed of sand and mostly stones (Ref. 55781). |
| IUCN Red List Status: |
Endangered (EN); Date assessed: 19 November 2020 (B2ab(iii)) Ref. (130435)
|
| Threat to humans: |
harmless |
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