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The hingemouth (Phractolaemus ansorgii) is a small freshwater fish that is found only in west central Africa, the sole member of the subfamily Phractolaeminae of the family Kneriidae.
The mouth can extend like a small trunk, thus the name, and has just two teeth, both in the lower jaw. The swim bladder has two compartments, and can function as a lung, allowing the hingemouth to survive in oxygen-poor environments.[1]
References
- "Phractolaemus ansorgii". Integrated Taxonomic Information System. Retrieved 11 March 2006.
- Froese, Rainer and Pauly, Daniel, eds. (2021). Species of Phractolaemus in FishBase. July 2021 version.
- Froese, Rainer; Pauly, Daniel (eds.) (202). "Phractolaemus ansorgii" in FishBase. July 202 version.
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