Aiptasia Eating Filefish

Acreichthys tomentosus


(3 Reviews)

Aiptasia Eating Filefish

Aiptasia Eating Filefish

Acreichthys tomentosus


(3 Reviews)

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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. 


Keeping the Aiptasia Eating Filefish (Acreichthys tomentosus) in Your Saltwater Aquarium

The Aiptasia Eating Filefish, scientifically known as Acreichthys tomentosus, is a valuable addition to saltwater aquariums, particularly for those dealing with the persistent nuisance of Aiptasia anemones. In this informative guide, we will delve into the care and management of the Aiptasia Eating Filefish, covering crucial aspects such as its habitat, reef compatibility, size, lifespan, dietary needs in captivity, availability through aquaculture, compatibility with other marine species, sexual dimorphism, juvenile to adult coloration changes, temperament, specific tank requirements, and precise water conditions. Additionally, we will list common names for this species and explain why acquiring the Aiptasia Eating Filefish from Saltwaterfish.com is a wise decision.

Habitat and Natural Range of Aiptasia Eating Filefish

The Aiptasia Eating Filefish is native to the Indo-Pacific and can be found in coastal and reef-associated environments. Understanding its natural habitat can provide insight into replicating appropriate living conditions in your aquarium.

Reef Compatibility of Aiptasia Eating Filefish

This species is often considered reef-safe with caution, especially for reef tanks plagued by Aiptasia anemones. Acreichthys tomentosus has a specialized diet that includes these pest anemones, making them an effective natural solution for Aiptasia control.

Size and Lifespan of Aiptasia Eating Filefish

A mature Aiptasia Eating Filefish typically reaches a size of about 3 to 4 inches (7.5 to 10 centimeters). They can have a lifespan of 5 to 7 years with proper care, providing long-term Aiptasia control for your aquarium.

Diet in Captivity for Aiptasia Eating Filefish

The primary diet of the Aiptasia Eating Filefish revolves around Aiptasia anemones. They possess a specialized feeding behavior, using their tubular snouts to pick at and consume these unwanted pests.

Aquaculture and Availability of Aiptasia Eating Filefish

The Aiptasia Eating Filefish is not bred in captivity. As such, they are usually sourced from the wild. However, choosing a reputable supplier like Saltwaterfish.com ensures you receive healthy and responsibly collected specimens.

Compatibility with Other Fish and Invertebrates for Aiptasia Eating Filefish

Acreichthys tomentosus is known for its peaceful and solitary nature. They are generally compatible with a variety of tankmates.

Sexual Dimorphism of Aiptasia Eating Filefish

Acreichthys tomentosus does not exhibit significant sexual dimorphism, so distinguishing males from females based on physical characteristics can be challenging.

Juvenile to Adult Coloration Changes in Aiptasia Eating Filefish

Juvenile Aiptasia Eating Filefish are known for their vibrant colors, often sporting a bright yellow or orange body with distinctive black markings. As they mature into adults, their colors may become more subdued, transitioning to a predominantly grey or brown hue.

Tank Requirements for Aiptasia Eating Filefish

To create an ideal environment for your Aiptasia Eating Filefish, it's essential to meet specific tank requirements.

  • Minimum Aquarium Size: A tank with a capacity of at least 30 gallons is recommended for a single Aiptasia Eating Filefish. Larger tanks are more suitable, especially if you plan to have multiple specimens or other tankmates.
  • Filtration: Utilize an efficient protein skimmer and biological filtration to maintain water quality. Aiptasia Eating Filefish thrive in well-filtered environments.
  • Live Rock: Incorporate live rock structures, caves, and crevices to provide hiding spots and mimic their natural habitat. These fish enjoy exploring and hiding within rock formations.
  • Water Temperature: Maintain a stable water temperature between 74°F and 78°F (23°C to 26°C). A consistent temperature is crucial for the overall health of Acreichthys tomentosus.
  • pH: Keep the pH level within the range of 8.1 to 8.4. Stable pH levels contribute to the well-being of the Aiptasia Eating Filefish.
  • Salinity: Maintain a salinity level of 1.023 to 1.025. Consistent salinity levels mirror the conditions of their natural habitat and promote optimal health.

Detailed Water Conditions for Aiptasia Eating Filefish

To ensure the health and well-being of your Aiptasia Eating Filefish, it's essential to maintain specific water conditions.

  • pH: Keep the pH level from 8.1 to 8.4 to ensure optimal physiological function.
  • Salinity: Maintain a salinity level between 1.023 and 1.025 to mimic the conditions of their natural habitat.
  • Water Temperature: Keep the water temperature stable within the range of 74°F to 78°F (23°C to 26°C).
  • Water Flow: Moderate water flow is suitable for Aiptasia Eating Filefish. Ensure there are no strong currents that could stress them.

Why Choose the Aiptasia Eating Filefish from Saltwaterfish.com?

Acquiring the Aiptasia Eating Filefish from Saltwaterfish.com is a prudent decision for several reasons.

  • Healthy Specimens: Saltwaterfish.com is committed to providing customers with healthy and ethically sourced Aiptasia Eating Filefish that have been carefully acclimated to captivity.
  • Effective Aiptasia Control: The Aiptasia Eating Filefish is a natural and efficient solution for eliminating Aiptasia anemones, helping you maintain a clean and vibrant reef tank.
  • Responsible Sourcing: By choosing Saltwaterfish.com, you support ethical collection practices and contribute to the responsible and sustainable management of marine species in the aquarium trade.

In conclusion, the Aiptasia Eating Filefish, with its remarkable dietary habits and peaceful nature, offers a valuable service to aquarists struggling with Aiptasia anemone infestations in their saltwater aquariums. When properly cared for and placed in a suitable tank environment, this species can provide practical and aesthetic benefits to your marine aquarium. Consider Saltwaterfish.com, your trusted source for acquiring healthy and responsibly collected Aiptasia Eating Filefish for your reef tank.

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

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