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Akawaio penak Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton & Lovejoy, 2013 |
| Family: | Hypopomidae (Bluntnose knifefishes) | |||
| Max. size: | 21.7 cm TL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | South America: endemic to the upper Mazaruni River in Guyana. | |||
| Diagnosis: | Anal soft rays: 173-199. Can be diagnosed by the following characters: coracoid with a foramen; opercle with concave posterior margin; one ossified basibranchial; absence of postpectoral or humeral accessory electric organs; 14 total pectoral-fin rays (ii-iii) (shared with ranges of some Brachyhypopomus species0; 173-199 anal-fin rays (shared with ranges of few species of Brachyhypopomus and Microsternarchus); snout length 24.7-32.6% HL; five pectoral radials, in some individuals four partially fused to five (shared with Hypopomus species); mesopterygoid with short or reduced ascending process (shared with Microsternarchus species); mesocoracoid bridge absent (shared with most species of Brachyhypopomus, Microsternarchus and Racenisia); and 17 precaudal vertebrae (shared with some Brachyhypopomus species) (Ref. 94087). | |||
| Biology: | ||||
| IUCN Red List Status: | Endangered (EN); Date assessed: 14 December 2022 (B1ab(iii)+2ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||