Читать книгу Clinical Guide to Fish Medicine - Группа авторов - Страница 80

These have two dorsal fins and an anal fin. Five gill slits with spiracles are close to the eyes. There is no nictitating membrane and eyes are dorsolateral on the head. Most have prominent nasoral grooves with barbels. Wobbegong sharks (Orectolobidae) have a dorsoventrally flattened head and body, rostral mouths, and fang‐like teeth. Bamboo (Hemiscyllidae) and nurse sharks (Ginglymostomatidae) are some of the most frequently kept species in aquaria. This group also includes the whale sharks (Rhincodon typus); these are plankton feeders and the largest fish in the world (Nelson et al. 2016).