Defining Characters: lepocephalus larvae; fusion of angular and retroarticular; rostral and prenasal ossicles.
Membership: diverse array of formes: typical teleost body shape of Elops and Megalops, to deep sea eels. Nearly all are marine, with a few brackish water representatives. Only the Anguillid eels are truely freshwater, and even they require marine waters for reproduction.
Remaining teleosts: retroarticular excluded form joint with quasrate; gill arch toothplatesfused to chondral bones; articular fused to angular; neural arch of PU1 absent.