| Family: |
Stevardiidae (Stevardiids), subfamily: Diapominae |
| Max. size: |
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5.91 cm SL (male/unsexed); 5.25 cm SL (female) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
South Armerica: Argentina. |
| Diagnosis: |
Dorsal soft rays (total): 7-8. This species is distinguished by the followinf characters: a terminal mouth; dorsal fin with two unbranched and eight branched rays'; pelvic fine with one unbranched and six branched rays; no caudal-fin organ; differs from its congeners by having unmodified scales on the lower caudal-fin lobe, lack of enlarged opercle and subopercle, incomplete lateral line, hyaline adipose fin, anal-fin distal border straight or slightly convex in adult males, large tricuspid teeth on anterior region of the dentary, distal arrangements of the anal-fin bony hooks in adult males and middle caudal-fin rays lacking a large round blotch (Ref. 119400). |
| Biology: |
|
| IUCN Red List Status: |
Not Evaluated (N.E.) Ref. (130435)
|
| Threat to humans: |
harmless |
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