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Microsternarchus longicaudatus Sousa, Wosiacki, Muriel-Cunha, Prudente, Sousa & Peixoto, 2024 |
| Family: | Hypopomidae (Bluntnose knifefishes) | |||
| Max. size: | ||||
| Environment: | pelagic; freshwater | |||
| Distribution: | South America: Brazil. | |||
| Diagnosis: | Anal soft rays: 152-173. This species is distinguished from its congeners by the following set of characters: distinct irregular suborbital blotches present, with chromatophores more concentrated near to the rictus and immediately below the orbits; caudal filament length in both sexes 35.1-36.8% TL; small black spots overlying the mid-dorsal region of the body; number of displaced haemal spines, three or four; dentary morphology, coronoid process of dentary continues posteriorly beyond dentary hook; anal-fin rays 152-173 (Ref 132455). | |||
| Biology: | ||||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||