A remarkably slender Indo-West Pacific filefish whose chin barbel and drifting posture help it resemble vegetation. An extremely elongate, laterally compressed fish with a long chin barbel, upward-opening mouth on a long snout, long-based dorsal and anal fins and a stretched caudal fin. The first dorsal spine is inconspicuous. Museums report maximum lengths of about 30–35 cm; these are biological size records, not aquarium enclosure limits.
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Responsible care profile
Species-matched aquarium operator recommendation; practical care guidance, not experimentally established lifetime tolerances. Required practical care fields are recorded; this is field coverage, not scientific certification or a compatibility guarantee.
The structured record includes multiple references and at least one dedicated aquarium-care source.
7 referenced sources- Care level
- Advanced
- Minimum volume
- 120 US gal (454.2 L)
- Preferred volume
- Not specified in current guidance
- Adult size
- 13.8 in (35 cm) · total length
- Reef compatibility
- Reef-Safe with Caution
- Temperament
- Overly aggressive companions may intimidate this tranquil fish. Supplier reports males quarrel in captivity. The supplier regards it as coral safe but is less confident about small crustaceans. An assumed invertebrate diet does not establish acceptance or balanced captive nutrition.
- Social plan
- Review documented species interactions before grouping.
Water
- Temperature
- 72–78 °F (22.2–25.6 °C)
- Salinity / specific gravity
- 1.02–1.025 SG
- pH
- 8.1–8.4
Species-matched aquarium operator recommendation; practical care guidance, not experimentally established lifetime tolerances. Source: https://www.qualitymarine.com/quality-marine/fish/filefish/anacanthus/bearded-leatherjacket-16537/
Habitat
Use the species-specific habitat and keeping guidance below.
Feeding
Marine animal foods; supplier-described captive menu · Set small daily feeding opportunities from the supplier’s demonstrated schedule; adjust to actual intake, body condition and waste production (MLL monitoring plan). · Food options: Artemia, Mysis shrimp, Chopped marine shrimp or prawn, Mussel, Squid, Marine fish flesh, Accepted marine pellets · De Jong Marinelife provides a species-named meaty-food menu. Verify the individual accepts it before purchase and monitor body condition. Quality Marine’s generic product description recommends algae while its authored species article regards invertebrates as likely food; the conflict is retained rather than treating algae as a complete ration.
Compatibility
Overly aggressive companions may intimidate this tranquil fish. Supplier reports males quarrel in captivity. The supplier regards it as coral safe but is less confident about small crustaceans. An assumed invertebrate diet does not establish acceptance or balanced captive nutrition.
What the evidence establishes
Species-matched aquarium operator recommendation; practical care guidance, not experimentally established lifetime tolerances.
- Identification and habitat
- Species-specific feeding and suitability assessment
- Reported maximum body size with measurement type
- water.temperature_c
- water.specific_gravity
- water.ph
- water_guidance
- experience.minimum_tank_litres
- experience.minimum_volume_source
- evidence_scope
- experience.difficulty
2026-10-14 follow-up review: Species-matched aquarium operator recommendation; practical care guidance, not experimentally established lifetime tolerances.
Acclimation and quarantine
MLL precaution: confirm identification, demonstrated food acceptance and the supplier’s actual water conditions before transfer; retain a species-specific quarantine plan.
Stocking safeguards
Aquarium setting: Home aquarium. Starvation risk: high.
- Confirm food acceptance and permanent adult housing before acquisition.
Special risks
- Overly aggressive companions may intimidate this tranquil fish. Supplier reports males quarrel in captivity. The supplier regards it as coral safe but is less confident about small crustaceans. An assumed invertebrate diet does not establish acceptance or balanced captive nutrition.
Husbandry Findings and Limits
These findings explain what the cited evidence supports. Facility precautions are identified separately from tested captive outcomes.
Documented aquarium husbandry — Documented keeping guidance; not a controlled trial
Feed a varied accepted marine animal menu as listed by De Jong Marinelife, with protected feeding access and peaceful companions. Confirm ingestion and monitor body condition. Provide sheltered areas rather than forcing this weak swimmer into strong current.
Scope and remaining limit: Species supplier menu is available, but accounts differ on natural diet. Food acceptance, meal size and long-term nutritional completeness are not experimentally established; verify the actual specimen’s feeding history.
Sources: Quality Marine — species-specific aquarium account · Hutchins and Swainston (1985), Western Australian Museum — locomotion/camouflage discussion · Species feeding account — scope retained · De Jong Marinelife — species-named captive menu2026-10-14 care follow-up — Documented keeping guidance; not a controlled trial
Direct account identifies Anacanthus barbatus; recommends120gallons+,72–78F,SG1.020–1.025,pH8.1–8.4. Operator labels care difficult; source limits remain because wild adult size and long-term enclosure needs require review.
Scope and remaining limit: Species-matched aquarium operator recommendation; practical care guidance, not experimentally established lifetime tolerances.
Sources: Species feeding account — scope retainedIdentification
An extremely elongate, laterally compressed fish with a long chin barbel, upward-opening mouth on a long snout, long-based dorsal and anal fins and a stretched caudal fin. The first dorsal spine is inconspicuous. Museums report maximum lengths of about 30–35 cm; these are biological size records, not aquarium enclosure limits.
Habitat and Distribution
Shallow coastal bays, estuaries and reef margins over sand, mud or weed, often near mangroves. The Australian Museum places it amongst seaweed and sea whips, while Museums Victoria records sandy, weedy, muddy and mangrove habitats.
Feeding and Ecology
Camouflages beside sea pens, sea whips, mangrove roots, long sponges and even ropes or floating shoots. The Western Australian Museum discussion describes a poor swimmer relying heavily on camouflage. Quality Marine describes slow, oblique drifting and treats an invertebrate diet as likely rather than fully documented.
Reproduction and Evidence
A species-specific spawning or larval-rearing method was not established by the retrieved museum and supplier accounts. The supplier reports male disputes in captivity; this is a compatibility observation, not a breeding protocol.
Aquarium Suitability and Keeping Context
Quality Marine’s species account considers it a generally peaceful aquarium fish that should have peaceful companions. Avoid aggressive competitors and check demonstrated food acceptance before acquisition. Its weak swimming supports sheltered areas away from overpowering current as a habitat-based planning inference. The source does not provide a tested menu, ration or numeric operating limits; retain those as unknown rather than borrowing another filefish’s recipe.
Compatibility and Risks
Overly aggressive companions may intimidate this tranquil fish. Supplier reports males quarrel in captivity. The supplier regards it as coral safe but is less confident about small crustaceans. An assumed invertebrate diet does not establish acceptance or balanced captive nutrition.
A living record
Museum or institutional natural history, primary research where available, and explicitly attributed keeper guidance. Photo attribution supplied by the user and cross-checked where source pages were retrievable. Public content last reviewed October 3, 2026.
- Australian Museum — Bearded Leatherjacket identification, habitat and classification ↗Reference source
- Museums Victoria / Fishes of Australia — Anacanthus barbatus ↗Reference source
- Quality Marine — species-specific aquarium account ↗Reference source
- Hutchins and Swainston (1985), Western Australian Museum — locomotion/camouflage discussion ↗Reference source