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Hyphessobrycon mapinguari Pastana, Dutra, Ohara, Teixeira & Menezes, 2025 |
| Family: | Acestrorhamphidae (American tetras), subfamily: Hyphessobryconinae | |||
| Max. size: | 3.48 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | Sputh America: Brazil. | |||
| Diagnosis: | Dorsal soft rays (total): 8-9; Anal soft rays: 23-27. This species is distinguished by the following set of characters: elongated dorsal fin in adult males; lacking hooks on fins of mature male specimens; dark caudal-peduncle blotch absent; 23-27 branched anal-fin rays; 6-7 teeth in the inner series of the premaxilla; 6-7 longitudinal scale rows between dorsal-fin origin and lateral line; 14 circumpeduncular scales; the inner row of premaxillary teeth tetra- or pentacuspid; red color at the dorsal portion of the iris not reaching the margin of the pupil present; red to orange caudal-peduncle blotch present; dark pigmentation on dorsal-fin interradial membrane present; chevron-shaped bars on the flank absent; six teeth in the inner series of the premaxilla; chalky-white pigmentation at the tip of the first three to six dorsal- and anal-fin rays absent; single, vertically elongated dark humeral blotch with diffuse margins (Ref. 133120). | |||
| Biology: | This species inhabits streams with slow-flowing, clear water, and minimal riparian vegetation composed of marginal grasses (Ref. 137536). | |||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||