Do fish have external testicles?
The reproductive organs of the fish are called gonads, and in most fish they are paired. The gonads of the fish are internal and are located near the middle of its body, next to its stomach. Females have two ovaries that produce eggs, and males have two testes that produce sperm.
How do fish reproduce?
Fish reproduce by bearing live young or by laying eggs. Livebearers give birth to fully formed and functional young called fry. The eggs are fertilized and hatch within the female.
Do fishes need sperm?
Summary. Nearly all fish reproduce by sexual reproduction – the fusion of sperm produced from testes and eggs produced from ovaries. Most species have separate female and male sexes, but there are also many species that are hermaphrodites, meaning that an individual has both testes and ovaries.