Of marine animals none is lawful but all kinds of fish; what floats dead of natural causes is unlawful; lawful is what [other fish are] inside its belly; if sliced and it dies, separated and remainder lawful.
If he confines fish in a pool and they die from crowding—it is lawful; [for] what ebbed from it of water—or he casts it ashore alive and it dies—it is lawful.
If he buys a fish on a thread [line] while it is in the water, takes the thread, then hands it to the seller saying “keep it for me,” and another fish swallows it: the second belongs to the seller; he brings out the first and delivers it to the buyer without [right of] rescission even if swallowing damaged it. If the tethered [fish] swallows another, both belong to the buyer, whether or not he took possession.