| Many families of fish include both sea fish and fresh water fish, as for instance, the thornback. |
| The thornback is another ugly fellow of this family, having spines on his back and a double row of them down his tail. |
| It is these purses, and those of the thornback and the edible skate, that we oftenest pick up on the English coast. |
| For a while we thought it might be a smallish skate, but it turned out to be a nice thornback of around twelve pounds. |
| Most of the skate sold in fish shops is in fact thornback ray, and in the Southeast the fish has the local name roker. |
| Eleven of these are of the shark variety, who live in blissful harmony with stingrays, thornback rays, conger eels and dogfish, to name but a few. |
