What are aquatic animals?

What are aquatic animals? Aquatic animals are those animals that live all the time or much of their life in water, whether sweet or salty. They can breathe oxygen dissolved in water (through gills or skin) or they can breathe it from the air (through lungs). The number of species that inhabit Read more…

How do fish reproduce?

How do fish reproduce? Fish are marine vertebrate animals, abundant and diverse in the different oceans, lakes, and rivers of our planet. Many of them are part of the diet of humanity, while others can become pets. These are eukaryotic animal species. They breathe through gills and are endowed with fins instead Read more…