Eucarida includes lobsters, crabs, shrimps, prawns and krill. Sea trout feed mainly on fish, small crabs, shrimps and prawns. There are of brackish water fish ponds which produce prawns, shrimps and milkfish. Young sharks also consume scyphozoan jellyfish and crustaceans, including mud shrimps ("Callianassa") and penaeid prawns. Other invertebrate prey includes crabs, spiders, shrimps and earthworms. Young sharks feed on small fishes, shrimps, and crabs. Popular protein ingredients are fish cakes, imitation crab meat, eggs, tunas, or shrimps. The state provides valuable seafood such as crabs, oysters, shrimps and sea snails among others. Seafood such as lobsters and shrimps are also often prevalent. Also commonly used are beef, goat, fish, shrimps, or crayfish. Sirens are omnivorous, feeding mainly on worms, small snails, shrimps, and filamentous algae. Shrimps and mud lobsters use the muddy bottoms as their home. They feed on a wide variety of fish, shrimps and squid. As well numerous brown shrimps and barnacles can be found. Caprellidae is a family of amphipods commonly known as skeleton shrimps.