The oyster toadfish (Opsanus tau)

With a total adult length of anywhere from 3 to 16 cm (1+1⁄8–6+1⁄4 in), the smooth toadfish has an elongate body with a rounded back and flattened belly. The body narrows periorly to the slender tail, and its fins are all elongate and rounded. The dorsal fin has 9 to 11 rays. The pectoral fin has 15 to 18 rays, the first of which is very short.