The Doryrhamphus janssi grows up to 8 inches.  The small size will come to you generally 1 to 2 inches; the medium generally 3 to 4 inches; the large generally 4 to 5 inches.  The Janss' Pipefish prefers a tank of at least 20 gallons with plenty of places to hide & swim.  The Doryrhamphus janssi is a carnivore and likes to eat variety of inverts (Mysis Shrimp, daphnia guppies, grass shrimp, mosquito larva) a few times/day.  The Janss' Pipefish is a high maintenance fish.  The Janss' Pipefish may act peacefully toward other fish.  This is not a hardy fish.  Able to breed.  Keep water quality high (SG 1.020 - 1.025, pH 8.1 - 8.4, Temp. 72 - 78° F).  Indo-Pacific.  The Janns Pipe is also a cleaner fish of other fish, and will exhibit this behavior in a reef tank. Will be picked at by blennies, porcupine fishes, tobies, triggerfishes, wrasses. Better if kept in species tank. "The Jannss' pipefish is a moderately easy fish to keep providing it will accept frozen mysis shrimp. It is also a cleaner fish and will exhibit this parasitic removal behavior in a reef tank. The Banded Pipefish has needs very similar to seahorses and makes for a great tank mate with seahorses. Like a seahorse it needs a well seasoned tank with pristine/stable water quality and live with other non-aggressive feeders. There are very few fish that will exist well with a pipefish as most fish are aggressive feeders, leaving the slow eating pipefish starving. The banded pipefish will be picked at by blennis, porcupine fish, tibies, triggers, wrasses and other small fish eating predators. It prefers to live in caves and crevices and in dimly lit tanks. The Banded pipefish is recongnized by it's pattern of red to blackish bars on it's body and by the presense of a distinct caudal (tail) fin, and by it's very long snout."

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