order Isospondyli

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Noun1.order Isospondyli - most primitive teleost fishes; all are soft-finned: salmon; trout; herring; shad; sardines; anchovies; whitefish; smelts; tarpon
animal order - the order of animals
Malacopterygii, superorder Malacopterygii - an extensive group of teleost fishes having fins supported by flexible cartilaginous rays
family Gonorhynchidae, Gonorhynchidae - coextensive with the genus Gonorhynchus
Clupeidae, family Clupeidae - herrings; shad; sardines; etc.
family Salmonidae, Salmonidae - salmon and trout
Coregonidae, family Coregonidae - soft-finned fishes comprising the freshwater whitefishes; formerly included in the family Salmonidae
Elopidae, family Elopidae - tarpons and ladyfishes
Argentinidae, family Argentinidae - small marine soft-finned fishes with long silvery bodies; related to salmons and trouts
family Myctophidae, Myctophidae - deep-sea fishes comprising the lantern fishes
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