Osteological development of the lophiid anglerfish,lophius gastrophysus

摘要: The osteological development of the head skeleton and dorsal, pectoral, anal fin supports, are described from cleared stained specimens ofLophius gastrophysus larvae, ranging 4.6 to 21.8 mm NL; results compared with those juvenile (79.8 SL) adult (398 specimens. Tiny conical teeth present on premaxillary, dentary, palatine vomer since early stage. first three dorsal spines initially positioned midline body posterior supraoccipital, but they migrate forward growth become cephalic in juveniles. movement is produced by extension cartilaginous basal inside subepidermal space. During planktonic larval stage pectoral fins sides as ordinary fishes, move ventrad leg-like bottom living juveniles adults. Ossification caudal complex ofL. larvae proceeds very slowly only NL larva has an almost completely ossified complex. Eight principal rays loosely attached edge hypurals no procurrent present. Larvae have well developed parhypurapophysis at mid-portion urostyle which transforms into keel-like structure