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Gymnocorymbus ternetzi (Boulenger, 1895) Black tetra |
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photo by
Hoffmann, P. and M. Hoffmann |
| Family: | Acestrorhamphidae (American tetras), subfamily: Pristellinae | |||
| Max. size: | 7.5 cm SL (male/unsexed) | |||
| Environment: | pelagic; freshwater; pH range: 6 - 8; dH range: 5 - 19 | |||
| Distribution: | South America: Paraguay and Guaporé River basins to Argentina (Ref. 9086). | |||
| Diagnosis: | ||||
| Biology: | Occurs in the middle and upper water layers. Feeds on worms, small crustaceans and insects (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51150). | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 04 March 2021 Ref. (130435) | |||
| Threat to humans: | harmless | |||