Types of reproduction in fish

• At least three types of reproduction are possible

a) Bisexual (e.g., carp, perch, catfishes, etc.).

• In these species, sperms and eggs develop in separate male and female individuals and both sexes are involved in reproduction i.e. common types of reproduction.

b) Hermaphroditic (e.g., Trout, perches, Walleyes, darters, and some of the black basses).

• In true hermaphroditic eggs and sperms develop in the same gonad and self-fertilization takes place.
• In these species, both sexes are in one individual and are of a rare type.
• Self-fertilization is, however, the real exception.

b) Parthenogenetic (e.g., Poecilia formasa, Amazon Molly).

• In these species development of young is without fertilization and is of also rare type.
• Generally, fishes are bisexual i.e. sexes are separate or the individuals are dioecious.