Gasterosteiformes

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Gasterosteiformes

[‚gas·tə‚rä·stē·ə′fȯr‚mēz]
(vertebrate zoology)
An order of actinopterygian fishes characterized by a ductless swim bladder, a pelvic fin that is abdominal to subthoracic in position, and an elongate snout.
References in periodicals archive ?
Evolutionary relationships of the sea moths (Teleostei: Pegasidae) with a classification of gasterosteiform families.
The ossicles of cotti-forms, syngnathiforms, and gasterosteiforms have been characterized and differences in scale modifications of female and male specimens of the shorthorn sculpin documented in Marss et al.