Opistognathus rosenblatti, the blue-spotted jawfish, is a species of jawfish native to the Gulf of California. It is an inhabitant of reefs where it is found in large colonies at depths of around 12 metres (39 ft). This species hides in its burrow at night, completely sealing the entrance. Every morning it rebuilds the burrow entrance. It can reach a length of 10 centimetres (3.9 in) TL. It can also be found in the aquarium trade.