Pipefish a skinny long fish that can grow up to 20 cm. They do well in a aquarium but as they are not strong swimmer they have problems competing for food in an aquarium with fast fish. They are excellent partners for Seahorses and do well as tank mates as they both share the same feeding requirements. They must be in a tank with low flow so they can get around the aquarium without using to much energy. Live foods suit the pipefish best but they also will eat frozen foods.