Species in the genus Parabrotula have eel-like, laterally compressed bodies posteriorly; head small, mouth small, lower jaw protruding beyond upper, teeth in jaws present or absent. Dorsal and anal fins similar, continuous with caudal fin; dorsal-fin origin about midbody, well behind origin of small pectoral fins; anal-fin origin somewhat posterior, behind anus; pelvic fins absent. Scales absent, skin smooth, loose, lateral line with minute papillae, sensory pores absent from head. Males and females with copulatory organs.
Anderson, M.E. 1986. Order Zoarciformes, pp. 342-343 In Smith, M.M. & P.C. Heemstra (eds). Smiths's Sea Fishes. Johannesburg : MacMillan South Africa. 1047 pp.
Campbell, M.A., Nielsen, J.G., Sado, T., Shinzato, C., Kanda, M., Satoh, T.P. & Miya, M. 2017. Evolutionary affinities of the unfathomable Parabrotulidae: Molecular data indicate placement of Parabrotula within the family Bythitidae, Ophidiiformes, Molecular Phylogenetics and Evolution 109: 337-342, http://dx.doi.org/10.1016/j.ympev.2017.02.004 Abstract.
Miya, M. & J. Nielsen. 1991. A new species of the deep-sea fish genus Parabrotula (Parabrotulidae) from Sagami Bay with notes on its ecology. Jpn. J. Ichthyol. 38(1): 1-5.
Nielsen, J., J. Badcock & N.R. Merrett. 1990. New data elucidating the taxonomy and ecology of the Parabrotulidae (Pisces: Zoarcoidei). J. Fish Biol 37(3): 437-448.
Nielsen, J.G., D.M. Cohen, D.F. Markle & C.R. Robins. 1999. FAO species catalogue. Volume 18. Ophidiiform fishes of the world (Order Ophidiiformes). An annotated and illustrated catalogue of pearlfishes, cusk-eels, brotulas and other ophidiiform fishes known to date. FAO Fish. Synop. No. 125, 178 pp. (placed in the family Parabrotulidae)