Biology:Hingemouth
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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 family Phractolaemidae 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. Its mouth can extend up to 30% of the hingemouth's head length. It has highly flexible lips, and its mouth is mainly supported by cartilage and other connective tissues.[1] The swim bladder has two compartments, and can function as a lung, allowing the hingemouth to survive in oxygen-poor environments.[2]
References
- ↑ Evans, Allyson J.; Naylor, Emily R.; Lujan, Nathan K.; Kawano, Sandy M.; Hernandez, L. Patricia (June 2024). "Deploy the proboscis!: Functional morphology and kinematics of a novel form of extreme jaw protrusion in the hingemouth, Phractolaemus ansorgii (Gonorynchiformes)" (in en). Journal of Anatomy 244 (6): 929–942. doi:10.1111/joa.14020. ISSN 0021-8782. PMID 38308591.
- ↑ Banister, Keith F. (1998). Paxton, J.R.. ed. Encyclopedia of Fishes. San Diego: Academic Press. p. 97. ISBN 0-12-547665-5.
- "Phractolaemus ansorgii". Integrated Taxonomic Information System. https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=162844. Retrieved 11 March 2006.
- Froese, Rainer and Pauly, Daniel, eds. (2021). Species of Phractolaemus in FishBase. July 2021 version.
- Froese, Rainer and Pauly, Daniel, eds. (202). "Phractolaemus ansorgii" in FishBase. July 202 version.
Wikidata ☰ Q387337 entry
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