Sam 2 – Nematode worms grow inside the flesh and are kosher. The salmon and carp lice are parasites that grow in the water and attach themselves to the fish for food. They are “Sheretz Hamayim” and would need fins and scales to be kosher! Since they haven’t got them they are osur like all non kosher sea creatures. The salmon louse is easy to detect, it is about 5-10mm long. Half of it is round and the rest is a tail. The carp louse is much smaller about 4mm long, oval, and translucent. It is best to watch an expert checking before attemting oneself.
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