How many varieties of Sardines are there?
More than 20 varied species of small fish are sold as sardines worldwide. They are typically available in small, ready-to-use tins, but are also sold fresh. Canned sardines are sold in soy, olive or other oil, fried or smoked, packed in mustard sauce, tomato sauce or even salsa, and may be skinned and boned and sold as fillets, too.