Is the sturgeon kosher?

Fish which only have fins are not kosher. Of the four types of scales, clenoid, cycloid, ganoid and placoid, only clenoid and cycloid scales are valid according to the Torah. ... Some fish that have such scales, such as eels, lumpfish, shark, sturgeon, and swordfish, are not kosher. read more

These you may eat of all that live in water: anything in water, whether in the seas or in the streams, that has fins and scales--these you may eat. read more

Some fish that have such scales, such as eels, lumpfish, shark, sturgeon, and swordfish, are not kosher. All shellfish and mammals (such as whales, and dolphins) are not kosher. Only the eggs of kosher fish, such as fish roe or caviar, are allowed, therefore supervision is necessary. read more