Bluestriped fangblenny (Plagiotremus rhinorhynchos) in an empty worm snail tube. This blenny inhabits lagoons and reefs of the Indo-Pacific region. It feeds on the skin and scales of other fish in short, quick attacks. It has been suggested that it mimics the blue streak cleaner wrasse to fool fish waiting to be cleaned. Photographed off Derawan Islands, East Kalimantan, Indonesia.