DISCHISTODUS MELANOTUS - (BLEEKER, 1858)
Picture courtesy of: Alain Daoulas
Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Blenniiformes (Order) > Pomacentridae (Family) > Pomacentrinae (Subfamily) > Dischistodus (Genus)
Demoiselle à ventre noir, Blackvent damsel, Black-vent damsel, Seguro-suzumedai, セグロスズメダイ, 黑斑盘雀鲷, 黑背雀鯛,
Synonymes
Dischistodus notophthalmus (Bleeker, 1853)
Dischistodus notopthalmus (Bleeker, 1853)
Pomacentrus melanotus (Bleeker, 1858)
Pomacentrus notophthalmus (Bleeker, 1853)
Pomacentrus suluensis (Seale, 1910)
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Biology
Adults occur in lagoon reefs and generally prefers small patch reefs with sand or rubble substrates. Feed on benthic algae which it aggressively guards against other herbivores. Juveniles secretive in rubble. Oviparous, distinct pairing during breeding. Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs. Diurnal species.
Last update: 25, April 2024
Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Blenniiformes (Order) > Pomacentridae (Family) > Pomacentrinae (Subfamily) > Dischistodus (Genus)
Demoiselle à ventre noir, Blackvent damsel, Black-vent damsel, Seguro-suzumedai, セグロスズメダイ, 黑斑盘雀鲷, 黑背雀鯛,
Synonymes
Dischistodus notophthalmus (Bleeker, 1853)
Dischistodus notopthalmus (Bleeker, 1853)
Pomacentrus melanotus (Bleeker, 1858)
Pomacentrus notophthalmus (Bleeker, 1853)
Pomacentrus suluensis (Seale, 1910)
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Description
Dorsal spines (total): 13; Dorsal soft rays (total): 13-15; Anal spines: 2; Anal soft rays: 13-14. Pectoral fin rays: 17; Lateral line scale: 15-17; Gill rakers: 21-23; Body depth: 2.0-2.1 in SL. Max. length: 16.0 cm TL. Depth range: 1 - 12 m.
Color
Juveniles have an ocellus over the center of the dorsal fin base.
Adults have a large black patch on the abdomen reaching the anus. Body white, anterodorsal (or sometimes entire half of body) dark brown, opercle spots prominent pale large.
Etymology
Dischistodus: from Latin prefix, di- = two, double + from Greek, schist-, Schisto = easily split-, stone- (those that split into layers) + from Greek, odous = teeth. Referring to teeth immovable, tricuspide.
melanotus: from ancien Greek, mélas, mélanos = black + from Greek, notum = back. Referring to dark-brown anterodorsal portion of body.
Original description: Pomacentrus melanotus Bleeker, 1858 - Type locality: Manado, Sulawesi, Indonesia.
Distribution
Western Pacific: eastern Malaya (Malaysia) and Indonesia, east to Yap (Micronesia) and Papua New Guinea, south to Queensland (Australia) and New Caledonia.
Dorsal spines (total): 13; Dorsal soft rays (total): 13-15; Anal spines: 2; Anal soft rays: 13-14. Pectoral fin rays: 17; Lateral line scale: 15-17; Gill rakers: 21-23; Body depth: 2.0-2.1 in SL. Max. length: 16.0 cm TL. Depth range: 1 - 12 m.
Color
Juveniles have an ocellus over the center of the dorsal fin base.
Adults have a large black patch on the abdomen reaching the anus. Body white, anterodorsal (or sometimes entire half of body) dark brown, opercle spots prominent pale large.
Etymology
Dischistodus: from Latin prefix, di- = two, double + from Greek, schist-, Schisto = easily split-, stone- (those that split into layers) + from Greek, odous = teeth. Referring to teeth immovable, tricuspide.
melanotus: from ancien Greek, mélas, mélanos = black + from Greek, notum = back. Referring to dark-brown anterodorsal portion of body.
Original description: Pomacentrus melanotus Bleeker, 1858 - Type locality: Manado, Sulawesi, Indonesia.
Distribution
Western Pacific: eastern Malaya (Malaysia) and Indonesia, east to Yap (Micronesia) and Papua New Guinea, south to Queensland (Australia) and New Caledonia.
Biology
Adults occur in lagoon reefs and generally prefers small patch reefs with sand or rubble substrates. Feed on benthic algae which it aggressively guards against other herbivores. Juveniles secretive in rubble. Oviparous, distinct pairing during breeding. Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs. Diurnal species.
Last update: 25, April 2024