Mustela.
1. f. shark closely resembles the dogfish, little more than one meter in length, almost cylindrical body, small head, long snout, skin of dark grey back and white on the belly, without scales, but full of horny tuberculillos that make it very rough, short pectoral fins, and thick, notched tail. Its flesh is edible and its skin is used as sandpaper.
2. f. ant. weasel.
