Ecology of Diadema setosum
Main Ref. Schoppe, S., 2000
Remarks Common in the sublittoral fringe around protected rocky coastlines (Ref. 102838). Found on muddy substrate (Ref. 2931). Occurs in assemblages in reef areas with high percentage of dead corals (Ref. 800). Common on Porites-dominated coral reefs; less common on Acropora assemblage (Ref. 102838). Feeds on algae (Also Ref. 128613) that grows on dead corals or rubble area (Ref. 800). Dwells in rocky and sandy substrates at depths of 1-70m. Also inhabits coral reefs and sea grass meadows. Hides in rocky crevices particularly when under intense light. Recorded from subsurface water temperatures of 16.9-30.8°C, oxygen concentration of 7.5 mg/L, and salinities of 36.4-38.7 per mille (Ref. 128613). Associated with coral communities. Dwells on soft substrates. Grazes on encrusting algae over hard substrates at night. Bioeroder. Keeps algal growth in check (Ref. 129602).

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 Diadema setosum may be found.


Substrate Benthic: mobile; Soft Bottom: sand; mud; Hard Bottom: rocky;
Substrate Ref. Fishelson, L., 1971
Special habitats Beds: sea grass; Coral Reefs;
Special habitats Ref. George, D., 2005


عجرم Claereboudt, M.R., 2019
Associations commensalism;
Associated with Ostorhinchus nigrofasciatus.
Association remarks Serves as protection for Ostorhinchus nigrofasciatus.


Feeding type mainly plants/detritus (troph. 2-2.19)
Feeding type Ref. George, D., 2005
Feeding habit grazing on aquatic plants
Feeding habit Ref. George, D., 2005

Trophic Level(s)

Estimation method original sample unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 2.00 0.00 Trophic level and s.e. inferred from exclusive plant/detritus food items.
(لاثم ناونعب 9948)
(لاثم ناونعب cnidaria)
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