Kosher Fish and Kashrut

If you keep kosher, you’ve asked what does OU kosher mean. The OU (Orthodox Union) certifies over a million food products worldwide. Here is what OU, OU-D, OU-M, and OU-P each tell you, and when fish needs it.

Is seafood kosher? Only fish with fins and removable scales qualify under Jewish law. Shellfish, shrimp, lobster, crab, and squid are not kosher. Check any species at KosherFish.

Yes, barracuda is kosher. It has fins and cycloid scales that lift cleanly off the skin, satisfying the Torah’s requirement in Leviticus 11:9-12. The OU and cRc both confirm it. Here’s what you need to know, including when certification matters.

Kosher dietary laws divide food into meat, dairy, and pareve. Fish must have fins and removable scales per Leviticus 11. Learn what is permitted and forbidden.

Fish is pareve under kosher law, meaning it’s neither meat nor dairy. You can serve kosher fish with cheese or at a meat meal. Here’s what pareve means, what the authorities say, and the one nuance about fish and meat at the same table.

Yes, mackerel is kosher. Atlantic, Pacific, Spanish, and king mackerel all have the fins and removable scales that Torah law requires. The Orthodox Union and the Chicago Rabbinical Council both list mackerel as kosher. Canned or smoked mackerel needs a hechsher.

For a whole fresh fish with visible scales, no hechsher is required. The scales identify the species, and that’s your verification. For fillets, smoked fish, canned tuna, or any processed fish, you need a kosher certification symbol. Here’s the complete rule.

No, shark is not kosher. It has fins but no valid scales, because its tooth-like denticles cannot be removed without tearing the skin. Here is what the OU and cRc say, plus the market names that hide shark.

Can you eat fish and meat together? Not in one dish. Jewish law keeps fish and meat apart for health, though you can have both at one meal with a rinse.

Is caviar kosher? Traditional sturgeon caviar is not, but salmon roe and other kosher fish roe are kosher when certified. Here is how to tell.