A true fish belongs to the superclass Pisces (or is a member of the jawed vertebrates, Gnathostomata, typically excluding hagfish and lampreys when specifically using "true fish"). Among the given options, the Seahorse (genus Hippocampus) is a bony fish (class Actinopterygii), a type of true fish.
Which one of the following is a true fish:
Asked in RPSC RAS Prelims 1998 · Topic: Taxonomy (Concepts of Species and Other Taxa)
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