Ecological Classification of Fishes
According to E.O. Wilson, there are 1.7 million species in the world. At present, this number is considered a small part of the world’s biodiversity. There are 751,000 species of insects known worldwide, including 112,000 species of Lepidoptera, 103,000 species of Hymenoptera, and 290,000 species of Coleoptera. There are also 290,000 beetle species. On the … Read more