Deuteronomy 14:9

Conservative English Version

You can eat any fish that has fins and scales. But there are other creatures that live in the water,

See the chapter Copy

and if they do not have fins and scales, you must not eat them. Treat them as unclean.

And don't eat pork, since pigs have divided hoofs, but they do not chew their cud. Don't even touch a dead pig!