spawning
Quick Summary
Spawning is the process by which fish reproduce, typically by releasing eggs and sperm into the water. Most bony fish are oviparous, meaning they lay eggs, which are then fertilized externally. These eggs are often numerous and small, with a high mortality rate.12
In contrast, some fish, including certain sharks, rays, and a few bony fish, have internal fertilization. Females of these species may lay fertilized eggs or give birth to live young, which can be nourished by egg yolk or directly by the mother.2
Reproductive behaviors vary widely, with some fish exhibiting elaborate courtship rituals, nest building, or parental care. Others undertake long migrations to specific spawning grounds. Hermaphroditism, where an individual can produce both sperm and eggs, also occurs in some fish species.123
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- reproductive behaviourFishes
…however, each of these huge spawning aggregations is made up of small, coordinated parties consisting of one female and one or more males. On the other hand, a number of fishes are monogamous, form pairs, and care for the eggs or young. In courtship behaviour, in which they utilize all…
Read More…however, each of these huge spawning aggregations is made up of small, coordinated parties consisting of one female and one or more males. On the other hand, a number of fishes are monogamous, form pairs, and care for the eggs or young. In courtship behaviour, in which they utilize all…
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salmon…they hatched in order to spawn. They use their olfactory senses (their sense of smell) to find their spawning grounds in their home river, and at least one species, the sockeye salmon (Oncorhynchus nerka), can also sense differences in Earth’s magnetic field to navigate back to its home stream from…
Read More…they hatched in order to spawn. They use their olfactory senses (their sense of smell) to find their spawning grounds in their home river, and at least one species, the sockeye salmon (Oncorhynchus nerka), can also sense differences in Earth’s magnetic field to navigate back to its home stream from…
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