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Dischistodus melanotus  (Bleeker, 1858)

Black-vent damsel
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Native range | All suitable habitat | Point map | Year 2100
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Dischistodus melanotus   AquaMaps   Data sources: GBIF OBIS
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Image of Dischistodus melanotus (Black-vent damsel)
Dischistodus melanotus
Picture by Cook, D.C.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Pomacentridae (Damselfishes) > Pomacentrinae
Etymology: Dischistodus: Greek, di = two + Greek, schistos = fissile stone, Plinius + Greek, odous = teeth (Ref. 45335).

Environment / Climate / Range Ecology

Marine; reef-associated; non-migratory; depth range 1 - 12 m (Ref. 9710).   Tropical; 35°N - 25°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Pacific: southern Japan and the Ryukyu Islands, Taiwan, Philippines, Palau, Indonesia, Papua New Guinea, Solomon Islands, and the Great Barrier Reef. Reported from Vanuatu (Ref. 13300).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 16.0 cm TL male/unsexed; (Ref. 9710)

Short description Morphology | Morphometrics

Dorsal spines (total): 13; Dorsal soft rays (total): 13-15; Anal spines: 2; Anal soft rays: 13 - 14. Adults have a large black patch on the abdomen reaching the anus; juveniles an ocellus over the center of the dorsal fin base (Ref. 48636). Body white, anterodorsal (or sometimes entire half of body) dark brown, opercle spots prominent pale large, belly patch dark brown. Body depth 2.0-2.1 in SL (Ref. 90102).

Biology     Glossary (e.g. epibenthic)

Adults occur in lagoon reefs and generally prefers small patch reefs with sand or rubble substrates (Ref. 1602). Feed on benthic algae which it aggressively guards against other herbivores (Ref. 9710). Juveniles secretive in rubble (Ref. 48636). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).

Main reference Upload your references | References | Coordinator : Allen, Gerald R. | Collaborators

Allen, G.R., 1991. Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p. (Ref. 7247)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 108899)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 25.2 - 29.3, mean 28.6 (based on 1860 cells; Ref. 115970).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02570 (0.01300 - 0.05081), b=3.00 (2.84 - 3.16), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic Level (Ref. 69278):  2.0   ±0.00 se; Based on food items.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (27 of 100) .