percoid การใช้

"' Scarlet badis "'( " Dario dario " ) is a tropical freshwater fish and one of the smallest known percoid fish species.
The fish bears some resemblance to members of Gempylidae, but has protrusible premaxillae, serrated opercles and preopercles, and a spur on the lowest principal caudal ray, all of which are characteristic of percoids.
Dating from the upper Cretaceous, the centropomids are of typical percoid shape, distinguished by having two-part dorsal fins, a lateral line that extends onto the tail, and, frequently, a concave shape to the head.