Eucarida includes lobsters, crabs, shrimps, prawns and krill. Sea trout feed mainly on fish, small crabs, shrimps and prawns. Seafood specialties include karimeen, prawns, shrimp and other crustacean dishes. Prawn crackers are made by mixing prawns, tapioca flour and water. Prepared foods include prawns (shrimp), lean pork, frozen fish food, and pelleted food. There are of brackish water fish ponds which produce prawns, shrimps and milkfish. Of crustaceans, Norway lobster, and deep-water prawns and brown shrimp are commercially fished. Shellfish, including crabs, prawns, tiger prawns, lobster, squid, and mussels, are commonly eaten. Fresh seafood, especially crab, prawns and ocean fish are common. Frozen and cut bait such as prawns, mussels, cockles and fish pieces are also effective. It can be incorporated into animal-product-free versions of scallops, fish, prawns (shrimp), crab, etc. Kool is a seafood broth from Jaffna containing crab, fish, cuttlefish, prawns, and crayfish. It is typically cooked with chicken or goat meat and occasionally with fish or prawns. Chow mein is made with either seafood, often just prawns, chicken, beef or barbecued pork. Some taxonomists identify shrimp with the infraorder Caridea and prawns with the suborder Dendrobranchiata.