OSTRACIIDAE Lactoria cornuta, 6.7 cm SL (photo by Seishi Kimura) Lactoria cornuta, 10.6 cm SL (from North Sulawesi, Indonesia; photo by Teguh Perisitwady) Lactoria cornuta (Linnaeus, 1758) Longhorn Cowfish D 8-9; A 9; P1 10-11. A pair of sharp, strong horns about twice eye diameter in length projecting anteriorly from front of head. A second pair of horns extending posteriorly from posteroventral corner of carapace. Caudal fin greatly elongate, one half to two-thirds of carapace length. Color: body yellowish brown with light blue spots on sides; dorsal, anal, and pectoral fins pale; caudal fin yellowish with light blue spots. Size: maximum 50 cm, commonly to 30 cm. Distribution: widely distributed in tropical Indo-West Pacific from East Africa eastward to Marquesas Islands, north to southern Japan. Remarks: occurring in weedy areas near rocks or reefs.