Cooks often divide fish into two categories, fatty (or oily or rich) and lean. These two categories can be split again, by whether their texture is firm or flaky.
Fatty, firm fish include tuna, eels, catfish, shark, and swordfish.
Fatty, flaky fish include salmon, herring, mackerel, and sardines.
Lean, firm fish include grouper, lingcod, mahi-mahi, and striped bass.
Lean, flaky fish include cod, flatfish, and rockfish.
Shellfish aren't technically fish, but they're usually sold at the fish counter, so we've lumped them into this category.
See also: Smoked or dried fish.
These come in cans packed in oil. Northern Europeans like them on hearty bread.Learn more
steamer Includes: Highly regarded Maine steamers and Long Island steamers, and less esteemed Maryland steamers.Learn more
In the United States, you're more likely to find these in an aquarium that in a supermarket, but Southeast Asians consider them a delicacy.Learn more
These tiny fish are similar to anchovies and sardines, and often sold in cans. You're supposed to eat the whole thing, including the head and tail.Learn more
This is found on the East Coast, especially in Florida. Just the claws are harvested. Substitutes: claws of blue crabsLearn more
This beautiful fish was introduced to Hawaii in 1958, and it multiplied so quickly that it's now crowding out some native species. Buying this fish helps prod fishermen to rid Hawaiian waters of this nuisance. It's a tasty fish, too, though there's concern that some of these fish may carry ciguatera, a toxin that affects certain reef fish.Learn more
Greek markets often carry jars of this pink cod roe. It's often used to make taramasalata, which is tarama mixed with a filler (like bread crumbs), oil, and seasonings.Learn more
Unopened canned tuna can be stored for up to a year in a dry, cool place. Once opened, it will keep for up to two days if you wrap it well and refrigerate it. Varieties include albacore, bluefin, blackfin, bonito, skipjack = aku, kawakawa, and the leaner yellowfin = bigeye = ahi.Learn more
Vesiga is the spinal cord of a European sturgeon. It is considered a delicacy in Russia. Coulibiac is a Russian dish that features vesiga.Learn more