Skeleton Hyomandibular bone Trunk vertebrae Caudal vertebrae Operculum Lacrimal bone Caudal fin rays Hypurals Infraorbital bones Basipterygium Anterior dorsal fin rays Cleithrum Preoperculum Alisphenoid Epaxialis muscles Hipaxialis muscles Adductor mandibulae muscle Abductor superficialis muscle Levator arcus palatini m. Inclinatores anales muscles Nervous system Cerebelum Optic lobes Olfactory rosettes Circulatory system Digestive system Kidneys Intestine Gills Swim bladder Ovaries Testes