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Pseudanos gracilis (Kner, 1858) |
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photo by
JJPhoto |
| Family: | Anostomidae (Headstanders) | |||
| Max. size: | 18.113 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater; pH range: 7; dH range: 2 - 8; depth range 0 - 1 m | |||
| Distribution: | South America: Guaporé, Negro and Orinoco River basins. | |||
| Diagnosis: | Dorsal soft rays (total): 12-12; Anal soft rays: 11-12. Can be diagnosed by having the following characters: four branchiostegal rays; dark spots absent on the center of each body scale; and angle of the dorsal and ventralmost radii of body scales between 110° and 180° (Ref. 91907). | |||
| Biology: | Adults are found in crevices in fast-flowing creeks (Ref. 598). Distinct pairs breed on densely grown weedy places (Ref. 205). | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 26 June 2020 Ref. (130435) | |||
| Threat to humans: | harmless | |||