Hippos [1] ( lat. Hippopotamyrus ) is a genus of fresh-water ray-finned fish from the family of the Araramidae -type Mormyr order. Distributed in reservoirs of tropical Africa .
| Hippos |
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Hippopotamyrus psittacus |
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| No rank : | Bilateral symmetrical |
| Cohort : | Osteoglossomorphs |
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Hippopotamyrus Pappenheim , 1906 |
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Some species of this genus have a rather limited range. For example, Hippopotamyrus longilateralis is found only in the Kunen River in southern Africa [2] .
Body length from 8.6 to 30.5 cm [3] . Caudal stem narrow, caudal fin deeply forked. There are teeth on the tongue and parasphenoid . The dorsal and anal fins are located in the rear of the body one opposite the other. They have a large cerebellum .
They feed on small invertebrates living in silt. To orient in space, search for food and detect predators, they use their own electric field , which is generated by the muscles.
As of October 2018, 15 species are included in the genus [3] :
- Hippopotamyrus aelsbroecki ( Poll , 1945)
- Hippopotamyrus ansorgii ( Boulenger , 1905)
- Hippopotamyrus castor Pappenheim , 1906
- Hippopotamyrus grahami ( Norman , 1928)
- Hippopotamyrus harringtoni (Boulenger, 1905)
- Hippopotamyrus longilateralis BJ Kramer & Swartz , 2010
- Hippopotamyrus macrops (Boulenger, 1909)
- Hippopotamyrus macroterops (Boulenger, 1920)
- Hippopotamyrus pappenheimi (Boulenger, 1910)
- Hippopotamyrus paugyi Lévêque & Bigorne , 1985
- Hippopotamyrus pictus ( Marcusen , 1864)
- Hippopotamyrus psittacus (Boulenger, 1897)
- Hippopotamyrus retrodorsalis ( Nichols & Griscom , 1917)
- Hippopotamyrus szaboi BJ Kramer , van der Bank & Wink , 2004
- Hippopotamyrus weeksii (Boulenger, 1902)
- Hippopotamyrus wilverthi (Boulenger, 1898)
