Blue Sea Squirt

Tunicates, or Sea Squirts, resemble sponges but are actually very complicated animals related to fish. Their adult form lives attached to hard substrate and filters the water for food, mainly bacterioplankton. A well established aquarium with a sand substrate will help to generate appropriate food. Additions of phytoplankton and occasional stirring of the sand, as well as minimal or no protein skimming, may help. We recommend Tunicates only be attempted by expert aquarists who can meet their demanding needs.

Spectacular sapphire bodies and contrasting rings around the siphons make this one of the most attractive tunicates. They are typically small, about 1/2 inches each, and may come attached to macroalgae or similar substrate.