Actinopterygii: General Characters and Its Classification | Zoology
In this article we will discuss about the general characters and classification of Actinopterygii. General Characters of Actinopterygii: 1. Body of Actinopterygii is covered by ganoid, cycloid or ctenoid scales. In some cases scales are absent. 2. Generally spiracle is absent in Actinopterygii. 3. External nare is on the top of the head. 4. Caudal fins are either homocercal or [...]