Weissstreifen-Aalgrundel

Arrow Goby, Pholidichthys leucotaenia, is a fish from the west-central Pacific Ocean. Lives in shallow lagoons and on coastal reefs from the Philippines to the Solomon Islands. It is often found in schools under ledges or around coral heads. These schools swim in such tight formations, they resemble a single organism. It can grow up to 60 cm in length.