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.
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
The average size of a tuna fish ranges between around 15 inches to about 79 inches. The average weight varies greatly, from as small as 3 pounds to as large as 400 pounds.Full Answer >
Fish survive when a lake freezes by receding to the lower depths of the lake where the water is not frozen. In the winter, the water still holds a sufficient supply of oxygen and food for active fish.Full Answer >
A dragon blood cichlid is a type of tropical fish characterized by its fiery red and light blue coloration. This fish is also commonly referred to as a firefish cichlid or golden peacock.Full Answer >
Whether fish feel pain is a point of controversy among scientists, but the consensus is that fish may respond to pain but not in the conscious way that humans respond to pain. Fish lack the neurological sensors that humans have to be receptive to pain, making it likely that fish do not consciously process pain.Full Answer >