A small order of primarily freshwater fishes with two suborders: the Chanoidei with one family and the Gonorhynchoidei with three families (Nelson 2006). Fink & Fink (1996) discussed relationships. Nelson (2006) provided a summary of recent work and demonstrated monophyly of the group. Near et al. (2014) found the genus Gonorynchus to be the sister lineage of all other gonorynchiform fishes. Each suborder contains only a single family in Australia.
Species have a small mouth with jaws that lack teeth, and pelvic, dorsal, and anal fins positioned far back on the body.
Fink, S.V. & Fink, W.L. 1996. Interrelationships of ostariophysan fishes (Teleostei). pp. 209-249 In Stiassny, M.L.J., Parenti, L.R. & Johnson, G.D. (eds). Interrelationships of Fishes. San Diego : Academic Press 496 p.
Near, T.J., A. Dornburg & M. Friedman. 2014. Phylogenetic relationships and timing of diversification in gonorynchiform fishes inferred using nuclear gene DNA sequences (Teleostei: Ostariophysi). Molecular Phylogenetics and Evolution 80: 297–307. http://dx.doi.org/10.1016/j.ympev.2014.07.013
Nelson, J.S. 2006. Fishes of the World. Hoboken, New Jersey : John Wiley & Sons, Inc. 601 p.