Blue Spotted Puffer

The Blue Spotted Puffer, also known as the Sharpnose Puffer or Solandri Toby, is a diminutive and charming member of the Canthigaster genus that brings all the personality of larger pufferfish in a compact, nano-tank-friendly package. Its body is a warm orange-brown to dark brown adorned with brilliant electric blue spots and streaks, particularly concentrated on the back and caudal peduncle. Bright blue lines radiate around the eyes, and a series of dark ocelli along the lower body adds to its visually complex and appealing appearance.

This species is one of the most accessible pufferfish for beginner marine aquarists due to its small adult size of around 4.5 inches, modest tank requirements, and willingness to eat virtually any offered food. The Blue Spotted Puffer is an active, curious fish that constantly explores its environment, investigating every corner of the aquarium with its beak-like mouth. Like its larger relatives, it develops a recognizable personality and will quickly learn to associate its keeper with feeding time.

While the Blue Spotted Puffer is peaceful toward most fish, it should be kept with caution in reef aquariums as it may nip at coral polyps, clam mantles, and ornamental invertebrates. Its small size means the damage is typically minimal compared to larger puffers, but persistent nipping can stress sensitive corals. The species is best kept singly, as conspecifics will fight, and it may also harass other small, slow-moving fish. Despite these considerations, the Blue Spotted Puffer's manageable size, hardy constitution, and engaging personality make it an excellent choice for aquarists seeking a personable fish for a moderately sized marine aquarium.