Archosargus is a genus of marine ray-finned fishes belonging to the family Sparidae, the sea breams and porgies. These fishes occur in the Western Atlantic and Eastern Pacific Oceans.
A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the f
Dorsal fin of a shark
Most fish, like this large goldfish, have one dorsal fin.
Many catfish can lock their dorsal fin spines erect and secrete venom to discourage predators.
The great white shark's dorsal fin contains stabilizing dermal fibers that stiffen dynamically as it swims faster to control roll and yaw.