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Silvinichthys gualcamayo Fernández, Sanabria & Quiroga, 2013 |
| Family: | Trichomycteridae (Pencil or parasitic catfishes), subfamily: Trichomycterinae | |||
| Max. size: | 5.1 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | South America: San Juan province in Argentina. | |||
| Diagnosis: | Dorsal soft rays (total): 9-10; Vertebrae: 38-38. Caudal peduncle length 22.0-23.9% SL; caudal peduncle expanded posteriorly toward caudal fin; absence of pelvic girdle and pelvic fin; 9-10 dorsal-fin rays (5-6 branched rays); 7 pectoral-fin rays; 38 vertebrae total, 9 opercular odontodes, 20 interopercular odontodes; wide supraorbital tendon bone (Ref. 93164); and the insertion point of the first proximal dorsal-fin pterygiophore posterior to the neural spine of vertebra 22 (Ref. 95056). | |||
| Biology: | ||||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||