| Family: |
Heptapteridae (Three-barbeled catfishes) |
| Max. size: |
21.3 cm SL (male/unsexed) |
| Environment: |
pelagic-neritic; freshwater |
| Distribution: |
South America: Argentina. |
| Diagnosis: |
Dorsal soft rays (total): 6-6; Anal soft rays: 11-13; Vertebrae: 51-52. This species is distinguished by the following characters: a small serrae on the anterior proximal margin of first pectoral-fin ray; anal-fin rays iv-v, 11-13 (15-17 total); adipose-fin base relatively short (40.9-47.4% SL); small eyes (7.4-14.2% HL); adipose fin is confluent to caudal fin; maxillary barbel not reaching pectoral-fin base in adults and reaching or scarcely surpassing first pectoral-fin ray in small juveniles (Ref. 86258). |
| Biology: |
This species inhabits well-oxygenated rivers and streams, with gravel substratum and moderate to rapid flowing waters. Individuals usually shelter under large rocks. Apparently solitary and only a few specimens are usually captured per collecting site (Ref. 86258). |
| IUCN Red List Status: |
Not Evaluated (N.E.) Ref. (130435)
|
| Threat to humans: |
harmless |
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