Aiptasia Eating Filefish

Aiptasia Eating Filefish

Acreichthys tomentosus


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Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: No
Minimum Tank Size: 30 gallons
Max Size: 4 inches
The Aiptasia Eating Filefish, Acreichthys tomentosus, is a thin bodied fish colored in shades of green and brown. Their uniquely shaped bodies are dotted with white and dark splotches resembling some types of rock. These fish have lots of personality and do well in a large fish-only aquarium. They like to have rockwork or gorgonians that they can hide behind when startled, and will peer out with a curious eye. The Aiptasia Eating Filefish is also known as the Matted Filefish, Bristletail Filefish, or Matted Leatherjacket. As their name suggests, the Aiptasia Eating Filefish is one of the best reef dwellers for eating pesky aiptasia and glass anemones making them a beneficial and working member of your tank. They are not specialized eaters and will consume most prepared foods as well. They can be shy, aggressive towards small fish except its own species, and should be kept well fed to avoid nipping on corals. 

I ordered my first matted filefish in 2016 from Saltwaterfish.com and it lived for 3.5 years which is normal lifespan. I ordered a replacement since it is such a cute fish who eats aiptasia from two other vendors (Biota through LiveAquaria.com and Petco Marine Fish) since Saltwaterfish.com was out of stock. Both arrived dead due to lack of proper heating materials within shipping containers. I will never do business with those companies again because they are careless and don't know how to properly ship live fish resulting in unnecessary deaths. My new filefish arrived healthy and perky this morning after I picked him up from the FedEx center. When I opened SaltwaterFish's box, it was warm and toasty inside because they know how to properly ship livestock and take great care in packing the box with heating materials. I highly recommend buying livestock from Saltwaterfish.com only!


Reviewed by: Ll on Sept. 18, 2020

Came in healthy and active. Has been munching on aiptasia in the tank. Would definitely buy again!


Reviewed by: William Wolcott on June 15, 2016

I received my Filefish a week ago. When I opened the box he looked half dead and I was worried because we had just had really cold weather in the Midwest. The fish perked up pretty quickly upon placement in the tank. He's eating brine well. He likes to hide in the rockwork and behind corals. He has not bothered any coral either. Nice looking fish, fairly timid, has gotten along well with 3 different types of tangs.


Reviewed by: Brett on March 10, 2015

Currently Aiptasia Eating Filefish does not have any questions and answers.

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