Teleostei (teleosts) >
Saccopharyngiformes (Swallowers and gulpers) >
Monognathidae (Onejaws)
Etymology: Monognathus: Greek, monos = one + Greek, gnathos = jaw (Ref. 45335).
Eponymy: Dr Poul Christian Jespersen (1891–1951) was a Danish oceanographer. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range ? - 3000 m. Deep-water
Eastern Atlantic: known only from a specimen caught off Sierra Leone.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.9 cm SL male/unsexed; (Ref. 6540)
The specimen examined contained shrimps in its stomach (Ref. 34506).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Bertelsen, E. and J.G. Nielsen, 1990. Monognathidae. p. 207. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 6540)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Tools
Special reports
Download XML
Internet sources