Members of the Balistidae family, filefish are closely related to triggerfish. They have rough scales and tiny mouths. Filefish have two dorsal fins with the first consisting of a single or double spine that can be locked in place. Recommended for more experienced marine aquarists.
FishNew PetCaresheets
Members of the Balistidae family, Filefish are closely related to triggerfish. They have rough scales and tiny mouths. The first of their two dorsal fins is a spine that can be locked in place. Recommended for more experienced marine aquarists.
Includes a variety of filefish, including:
Radial filefish
Tassle filefish
Redtail filefish
Orange spotted filefish
Aiptasia eating filefish
Whitespotted pygmy filefish
Typical appearance and behavior
Usually solitary, shy and generally peaceful
Inhabit the middle levels of the aquarium
Some speciescanchange their hue to blend into their surroundings
Filefish have nonoverlapping scales
Do best in quiet, nonaggressive environments
Species like the radial, aiptasia eating and whitespotted filefish are captive-bred
Characteristics
Care Difficulty
Intermediate to advanced, depending on species
Average Life Span
Up to 6+ years with proper care, depending on species
Average Adult Size
2-12 inches long, depending on species
Diet
Omnivore
Minimum Habitat Size
29+ gallons, depending on species
Water Temperature
74-80°F
Specific gravity
1.020-1.025
Habitat
Habitat size
Keep in an appropriately sized aquariumA minimum of 29-50+ gallons is recommended for smaller-sized adult filefish, however, water conditions can change rapidly in smaller water volumes.., depending on species; provide plants, rock and décor for hiding places and plenty of room for movementA larger aquarium is recommended for larger species.
Building your habitat
Water health - Provide proper filtration to ensure optimal water quality to help maintain health. Slow to moderate water circulation, based on species, should be provided to mimic water currents found in the filefish's natural habitat. Stable water quality (pH, ammonia, nitrate, nitrite) and water temperature are critical to the health of aquatic life. If you are unsure of your water quality, bring a sample to Petco for free testing. The addition of a protein skimmer can aid with maintaining great water quality and high dissolved oxygen levels. An aquatic heater should be used to stabilize water temperature, ensuring it does not fluctuate more than +/-2 degrees in a 24-hour period. The specific gravity should remain stable. Do not allow specific gravity to fluctuate more than +/-0.001 in a 24-hour period
Décor - Provide rock and décor for hiding places and plenty of room for movement
Live rock can provide a natural food source while also enhancing biological filtration
Feeding
What to feed your filefish
A well-balanced filefish diet consists of:
Flakes, pellets, freeze-dried, frozen or live foods
Vary diet to ensure proper nutritional balance
Things to remember when feeding your filefish
Depending on species and size,feed small amounts two to three times daily, no more than fish will eat in one to two minutes
Thaw frozen food before feeding
Filefish care
Water care: Maintaining great water quality with regular water changes and adequate filtration is important to help keep your filefish healthy
Daily: Check filter, water temperature, specific gravity and other equipment
Weekly: Check water quality at least once a week
Monthly: Change 10 to 25% of the total volume of water every two to four weeks, or as needed. Change filter media monthly.
Avoid overcrowded conditions, as this is a major cause of stress and disease.
Where to buy
Various filefish are available for purchase at your local Petco location. If visiting your local location, please call ahead to check availability.
May not be compatible with invertebrates, may eat shrimp, crabs and coral polyps
Health
Signs of a healthy filefish
Clear eyes
Healthy appetite
Active swimming
Fins completely intact and undamaged
Bright, even coloring
Free of parasites or disease
Red flags (If you notice any of these signs, contact your local aquatic specialist or veterinarian.)
Loss of color or appetite
Spots or fungus on body or mouth
Listlessness
Labored breathing
Weight loss
Cloudy eyes or pop-eye
Erratic swimming
Frayed or discolored fins
Bloating
Elevated scales
Common health issues
Health Issue
Symptoms or Causes
Suggested Action
Health IssueFin rot
Symptoms or CausesFrayed or disintegrating fins; the base of the fins usually reddens.
Suggested ActionImprove water quality; consult your local aquatic specialist or aquatic veterinarian for treatment.
Health IssueMarine ich
Symptoms or CausesCysts on fins, gills, and skin; labored breathing, excess skin mucus or pale skin.
Suggested ActionQuarantine fish immediately and use a commercial parasite remedy. Complete a water change; freshwater dips can dislodge the parasites. Consult your local aquatic specialist or aquatic veterinarian for treatment.
Health IssueBacterial infections
Symptoms or CausesCloudy eyes, open sores and/or reddening of the skin.
Suggested ActionImprove water quality; use a commercial antibacterial remedy as directed, consult your local aquatic specialist or aquatic veterinarian for treatment.
Health IssueViral infection (lymphocystis)
Symptoms or CausesWhite nodule growths on fins or body.
Suggested ActionImprove water quality; consult your local aquatic specialist or aquatic veterinarian for treatment.
FAQs
What do filefish eat? Filefish eat a varied diet of flakes, pellets, freeze-dried, and frozen or live foods.
Are filefish reef safe? Filefish are not considered to be reef safe as they routinely feed on various invertebrates and coral polyps.
Are filefish aggressive? Most filefish are considered shy and generally peaceful fish.
How big do filefish get? Filefish can grow 2 to 12 inches long, depending on species.
Are filefish hard to keep? Some filefish can be sensitive to water-quality fluctuations and can be finicky eaters or have specific feeding requirements, therefore, they are generally recommended for intermediate to advanced aquarists.
Do filefish eat bristle worms? Yes, certain species of filefish have been known to eat bristle worms.
Do filefish eat anemone? The aiptasia eating filefish is known to feed on aiptasia, removing these pesky pests from aquariums.
Ask a Pet Care Center associate about Petco's selection of products available for the care and happiness of your new pet. All products carry a 100% money-back guarantee.
Because all aquatic life are potential carriers of infectious diseases, such as a typical mycobacterium and salmonella, always wash your hands before and after handling your aquatic life or habitat contents to help prevent the potential spread of disease.
Pregnant women, children under the age of 5, senior citizens and people with weakened immune systems should contact their physician before purchasing or caring for aquatic life and should consider not having aquatic life as a pet.
This care sheet can cover the needs of other species.
Note: The information on this Care Sheet is not a substitute for veterinary care. If you need additional information, please refer to the sources on the following page or contact your veterinarian as appropriate.