Ecology of Acanthurus lineatus
Main Ref. Edward, A., 2050
Remarks The habitat consists of shallow reefs exposed to wave action (Ref. 58534) . Feeds on dense stands of algae growing on exposed rock areas (Ref. 28026, 43650). The collapsible scalpel-like spine on each side of the tail base is venomous and capable of causing very painful wounds if the fish is carelessly handled. Strongly territorial, aggressively chasing away intruders that enter their domain (Ref. 54301). Attacks are mainly against other algal-feeding fishes such as surgeonfishes, parrotfishes and triggefishes. This behaviour ensures an adequate supply of seaweed-covered turf, which is its sole food source (Ref. 54301). Diurnal species (Ref. 113699, page 31); courtship takes place at various times of the day, spawning peaks in the morning, but may also occur from midday to afternoon, and is often confined to ebb tides (Ref. 38697).

Aquatic zones / Water bodies

Marine - Neritic Marine - Oceanic Brackishwater Freshwater
Marine zones / Brackish and freshwater bodies
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Acanthurus lineatus may be found.


Substrate Ref.
Special habitats Coral Reefs;
Special habitats Ref. Broad, G., 2003


Associated with
Association remarks


Feeding type mainly plants/detritus (troph. 2-2.19)
Feeding type Ref. Edward, A., 2050
Feeding habit browsing on substrate
Feeding habit Ref. Hiatt, R.W. and D.W. Strasburg, 1960

Trophic Level(s)

Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition 2.00 0.00 2.00 0.00 Troph of juv./adults from 1 study.
From individual food items 2.00 0.00 Trophic level and s.e. inferred from exclusive plant/detritus food items.
Ref. Edward, A., 2050
(e.g. 346)
(e.g. cnidaria)
Entered by Capuli, Estelita Emily on 05.22.91
Modified by Arndt, Erik on 10.21.19
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