The largest fin on a perch is the leading dorsal fin. It's located on the back of the fish, before the second soft-rayed dorsal fin.Know More
Perch typically have two dorsal fins: a leading dorsal fin and a second dorsal fin. The leading dorsal fin is more rigid and usually contains six to 15 spines. The second dorsal fin is soft-rayed and does not contain spines. The two fins can be separate or joined together.
Perch belong to the largest and most diverse order of fish called Order Perciformes in the subclass Actinapterygii. Fish in this category commonly have fins supported by spines or jointed rays.Learn more about Fish
While a whale's fins are similar in structure and function to those of a fish, whales and fish are not closely related, so their similarities are defined as analogous, not homologous. The development of fins in two such unrelated animals is an example of convergent evolution.Full Answer >
Gill rakers are bony or cartilaginous outgrowths that project from the branchial arch of fish and assist in feeding by preventing stray particles or loose pieces from exiting through the gills. The size and arrangement of the gill rakers can signify what the fish eats.Full Answer >
The lateral line of a perch allows it to detect vibrations caused by both predators that threaten it, such as hawks, and prey that it might want to eat, such as minnows. The lateral line also helps the perch detect changes in the current and in the water pressure.Full Answer >
The scientific name of the yellow perch fish is "Perca flavescens," which is the name of the species of fish to which it belongs. The yellow perch is a member of the perch family which includes sauger, walleye and numerous small darters.Full Answer >