### Instruction:
Where is Ecsenius tessera commonly found?

### Input:
Ecsenius tessera is a species of combtooth blenny in the genus Ecsenius. It is found in coral reefs in the western Pacific ocean, around Vanuatu. It can reach a maximum length of 4.5 centimetres. Blennies in this species feed primarily off of plants, including benthic algae and weeds.

### Response:
Ecsenius tessera is commonly found in coral reefs in the western Pacific ocean, close to Vanuatu.