Читать книгу Clinical Guide to Fish Medicine - Группа авторов - Страница 69

Flatfish start their lives with a typical fish body plan (laterally compressed and bilaterally symmetrical) but as they mature, one eye migrates to the top of the skull and the body becomes dorsoventrally compressed. The most typical orientation is dextral (both eyes on the right side, lying on the left side) but even within the same species, sinistral orientation can occur. The eyeless side is ventral and light‐colored while the side with eyes is pigmented. The dorsal fin extends onto the head at the neurocranium in most species, except spiny turbots (Psettodes spp.). There is no swim bladder. Other adaptations include the asymmetrical location of the mouth and protrusible eyes.