What is the name of the fish in the picture?

'Synchiropus splendidus', the mandarinfish or mandarin dragonet, is a small, brightly colored member of the dragonet family, which is popular in the saltwater aquarium trade. The mandarin dragonet is native to the Pacific, ranging approximately from the Ryukyu Islands south to Australia. '

It is one of only two vertebrate species known to have blue colouring because of cellular pigment, the other being the closely related psychedelic mandarin ('S. picturatus').

The vivid coloration sports a bright blue background, with swirly orange stripes and a blue-greenish face with bold blue stripes. The large pelvic fins are used for 'walking' on the seafloor and are often mistakenly seen as the pectoral fins. The real pectorals are located almost at the center and are nearly transparent, with a tinge of fin, the anal fins and on part of the tail, the rest of which is striped in vibrant orange and blue. The dorsal fin, which is exceptionally tall in males, has a striking orange-and blue design as well. The eyes are usually red with black pupils.

Mandarin dragonets are reef dwellers, preferring sheltered lagoons and inshore reefs. While they are slow-moving and fairly common within their range, they are not easily seen due to their bottom-feeding habit and their small size (reaching only about 6 cm or 2.3 in). They feed primarily on small crustaceans and other invertebrates.