Fish food is an important part of the diet of many species of fish. BAIT, which is four letters long, is a type of food used to attract fish to a certain area. Sushi, which is five letters long, is a Japanese dish made from raw fish and rice. ALGA, which is four letters long, is a type of aquatic plant that is a common food source for many fish. COD, which is three letters long, is a type of fish that is often eaten as food. CAVIAR, which is six letters long, is a type of fish egg that is considered a delicacy. PLANKTON, which is eight letters long, is a type of microscopic organism that is a major food source for many fish.