AP BIOLOGY

Detailed explanation-1: -The vast majority of the greater than 33 000 species of bony fishes reproduce using external fertilization, a broad term that describes the release of sperm and eggs into the external environment and ranges from broadcast spawning to the direct placement of sperm onto eggs.

Detailed explanation-2: -Descriptive external fertilization examples are that of salmon, trout fish, and codfish. Both the female and male release their eggs and sperms respectively into the water where they diffuse and fertilize.

Detailed explanation-3: -Most fish, bivalves (like clams), and crustaceans, like this peacock mantis shrimp, use external fertilization.

Detailed explanation-4: -Fertilization is generally external, and most fish are oviparous. Many adults of the same species may come together in a group and release gametes into the wate r at the same time, which is called spawning. Fish hatch into larvae that are different from the adult form of the species.