Difference between fish and other animals.

Fish reproduce through internal and external fertilization. Representatives of the class have pronounced sexual dimorphism. Some fish can change sex throughout life, like grouper or wrasse, due to water temperature and relationships within the group. Minnow and goldfish can increase the number of individuals of the species through parthenogenesis. Some of the fish take care of their offspring, and some entrust the eggs to Fortune. There are cases when sharks, not yet born, began to devour their less developed brothers and sisters.

Conclusions TheDifference.ru

  1. Fish are included in the Kingdom of Animals
  2. The number of species of the superclass of Pisces is much less than the number of species of the Kingdom of Animals.
  3. Fish differ from animals by their characteristic body shape and the presence of fins.
  4. The skull bones of fish are not fused, in contrast to more developed animals.
  5. Only fish have a two-chambered heart.
  6. Only fish can change sex throughout life.
  7. Pisces is studied by the science of ichthyology, animals - by zoology.
.