From Marine Depot:
Blue Dot Puffer - Canthigaster epilamprus
Also known as: Lantern Goby
The Canthigaster epilamprus grows up to 5 inches. The Blue Dot Puffer prefers a tank of at least 50 gallons with plenty of places to hide & swim. The Canthigaster epilamprus is a omnivore and likes to eat variety of chopped meats (fish, scallop, shrimp, squid, clam). The Blue Dot Puffer is a medium maintenance fish and may act semi-aggressively toward other fish. It is a venomous fish, the flesh is poisonous. Not reef-safe, eats inverts. Be careful when moving around: use a net. Hunts at night. Will often inflate 2X its original size. Canthigaster epilampra (Jenkins 1903), the Lantern Goby. The closest thing to an "aqua-dog" are the puffers. Except they will bite the hand that feeds them, and you might croak if you give them a kissy. Do you have a spot in a fish-only system, maybe with plenty of algae growth, or want to get rid of that mantis shrimp that has eaten everything else? Porky the puffer's awaiting your call. Keep water quality high (SG 1.020 - 1.025, pH 8.1 - 8.4, Temp. 72 - 78° F). The Blue Dot Puffer is commonly collected from Fiji.