Do the fish leave the eggs after they are born?

Answer 1

It depends on the type of fish. Some fish, such as cod and herring, abandon their eggs after spawning. Salmon and trout cover their fertilised eggs with gravel but abandon them soon after. Among ocean fish, female seahorses and pipefish lay their eggs in a pouch on the underside of the male. The eggs hatch inside the male's pouch. Some fish, including certain ocean catfish and cardinal fish, carry their eggs in their mouth during the hatching period. In some species, the male carries the eggs. In other species, the female carries them. The males of a few species guard their young for a short time after they hatch. These fish include freshwater bass, bowfins, brown bullheads, Siamese fighting fish, and some sticklebacks. But most other fish provide no protection for their offspring.