Meso- to abyssopelagic (Ref. 58302) and bathypelagic (Ref. 58426). Feed mainly on crustaceans, but also take fishes, cephalopods, and other invertebrates (Ref. 2850, 11041). Oviparous, planktonic eggs hatch into planktonic leptocephalus larvae (Ref. 6719, 35600). Degenerative changes in males and females suggest semelparity (Ref. 35600).
- Nielsen, J.G. and E. Bertelsen 1990 Eurypharyngidae. p. 206. 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. 4457) http://www.fishbase.org/references/FBRefSummary.php?id=4457&speccode=4526