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Tetraodontiformes (Puffers and filefishes) >
Balistidae (Triggerfishes)
Etymology: Melichthys: Greek, melas, melaina, melan, black + icthys yos, fish. On the other hand, in Smith et al.,1986: 878), 'body dark brown to black' in https://www.biodiversitylibrary.org/item/266635#page/902/mode/1up.(P. Romero, pers.comm. 03/2022).
More on author: Bloch.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
seewasser riff-verbunden; tiefenbereich 0 - 75 m (Ref. 9710), usually 0 - 20 m (Ref. 40849). Tropical; 30°N - 29°S, 180°W - 180°E
Circumglobal. Uncommon in most areas but abundant around isolated oceanic islands (Ref. 9710).
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 50.0 cm TL Männchen/unbestimmt; (Ref. 5217); common length : 30.0 cm TL Männchen/unbestimmt; (Ref. 3272)
Rückenflossenstacheln (insgesamt) : 3; Rückenflossenweichstrahlen (insgesamt) : 30 - 34; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 28 - 30. This species is distinguished by the following characters: a deep groove in front of eye; 20-25 head scale rows from corner of mouth to lower end of gill opening; 57-66 body scale rows from upper end of gill opening to caudal fin base; presence of prominent longitudinal ridges following scale rows of posterior body; slightly rounded to double emarginate caudal fin; a thin white bar neat posterior margin of the caudal fin; black spots on scales forming lines (Ref. 90102).
Inhabit clear seaward reefs. More common around oceanic islands (Ref. 9276). Found on inner and outer reef crests, usually near the slope or drop-off to deeper water, where in small but loose aggregations. Sometimes swim high above substrate feeding on zooplankton (Ref. 48637). May also be solitary (Ref. 90102). Benthopelagic (Ref. 58302). Diet consists primarily of calcareous algae and zooplankton (Ref. 1602); also feed on phytoplankton (Ref. 5213). At Fernando de Noronha Archipelago, southeast Atlantic, groups of about 100 individuals join groups of spinner dolphins to feed on feces and vomits of the cetaceans when they congregate in a shallow bay for rest and social interactions. The postures a dolphin adopts prior to defecating or vomiting are recognized, and the fish begin to converge to the dolphin shortly before the actual voiding. Offal feeding may be regarded as a simple behavioral shift from plankton feeding to drifting offal picking (Ref. 48727). Marketed fresh (Ref. 9770). Minimum depth reported taken from Ref. 128797.
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Oviparous, distinct pairing during breeding (Ref. 205).
Matsuura, K., 2001. Balistidae. Triggerfishes. p. 3911-3928. In K.E. Carpenter and V. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 6. Bony fishes part 4 (Labridae to Latimeriidae), estuarine crocodiles. FAO, Rome. (Ref. 9770)
IUCN Rote Liste Status (Ref. 130435: Version 2024-2)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: weniger kommerziell; Aquarium: Kommerziell
Tools
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Estimates based on models
Preferred temperature (Ref.
123201): 24.4 - 28.9, mean 27.4 °C (based on 1548 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.4 ±0.0 se; based on diet studies.
Widerstandsfähigkeit (Ref.
120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).
Nutrients (Ref.
124155): Calcium = 22.1 [8.5, 59.3] mg/100g; Iron = 0.571 [0.293, 1.352] mg/100g; Protein = 18.7 [16.5, 20.9] %; Omega3 = 0.15 [0.08, 0.31] g/100g; Selenium = 21 [9, 49] μg/100g; VitaminA = 24 [5, 107] μg/100g; Zinc = 0.775 [0.488, 1.276] mg/100g (wet weight);
