Fish breed when eggs from female ovaries are fertilized by sperm from male testes. Both eggs and sperm are single cells with half the normal number of chromosomes. They can combine to form a fertilized egg with the complete complement of the chromosome, which can begin to grow into a new fish (Fig. 4.68).
What is the stage of fish development?
Complete metamorphosis consists of four stages: 1) egg, 2) larva, 3) pupa, and 4) adult.
How do fish start their life cycle?
Fish life cycle. Like all living things, fish grow. They start living as a single fertilized cell and continue to add cells until they die by first dividing this cell into two. Unlike mammals, fish grow once.
How many stages are there in the fish?
Each fish species has its own breeding method, but for generalization, the life cycle of the fish can be divided into seven stages. These seven stages are common to almost all different fish species.