Scales of Fishes (With Diagram) | Vertebrates | Chordata | Zoology
In many vertebrates, the exoskeletal covering of body is made of two types of scales- epidermal and dermal. Epidermal scales are cornified derivatives of the Malpighian layer of epidermis. They are well developed in terrestrial vertebrates such as reptiles, birds and mammals. Dermal scales are mesenchymal in origin and especially developed in the fishes. They are small, thin, cornified, calcareous [...]