The tank was signed only for three species: Zebra Moray (Gymnomuraena zebra), Spotted Snake Eel (Myrichthys maculosus), and Unicoloured Snake Moray (Uropterygius concolor). The last one wasn't seen, but the first two are in the vase. I don't know which species the other two morays in this photo are. The tank also had several unsigned triggerfish species including the Pinktail Triggerfish (Melichthys vidua) which is in the vase as well.