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Hyphessobrycon auca Almirón, Casciotta, Bechara & Ruíz Díaz, 2004 |
| Family: | Acestrorhamphidae (American tetras), subfamily: Hyphessobryconinae | |||
| Max. size: | 4.22 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | South America: Argentina. | |||
| Diagnosis: | Distinguished from other species of the genus by having one maxillary tooth with 5 cusps; dental row with teeth decreasing in size anteroposteriorly; males with hooks in all fins; mature females with hooks on pelvic-fin rays; one humeral spot vertically elongated, bounded by a light area; a second lateral spot may be faint or well developed; a wide lateral band ending in a conspicuous caudal spot (Ref. 55796). | |||
| Biology: | ||||
| IUCN Red List Status: | Vulnerable (VU); Date assessed: 01 November 2020 (B1ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||