Teleostei (teleosts) >
Acanthuriformes (Surgeonfishes) >
Chaetodontidae (Butterflyfishes)
Etymology: Heniochus: Greek, enioi, -ai, -a = sometimes, some + Greek, oche = food (Ref. 45335).
More on author: Jordan.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; non-migratory; depth range 5 - 210 m (Ref. 9710), usually 5 - 30 m (Ref. 90102). Subtropical; 30°N - 30°S
Indo-Pacific: Red Sea to South Africa, Réunion, Mauritius, Seychelles and Maldives; elsewhere to Indonesia, Japan, Australia and Hawaii; absent in much of Oceania..
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.0 cm TL male/unsexed; (Ref. 48636)
Occur primarily along outer reef slopes, in current channels. Juveniles in aggregations around isolated patch reefs, adults in large schools well above the bottom (Ref. 9710). In Indonesia, adults most common in depth 40-50 m, reported to 200 m (Ref. 48636). Benthopelagic (Ref. 58302). Feed on plankton. Juveniles may act as cleaners (Ref. 9710); also observed in adults (Ref. 48636). Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Form pairs during breeding (Ref. 205).
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest; aquarium: commercial
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Estimates based on models
Preferred temperature (Ref.
123201): 19.1 - 28.1, mean 26.1 °C (based on 501 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02239 (0.01097 - 0.04568), b=3.01 (2.84 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±0.40 se; based on food items.
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
Nutrients (Ref.
124155): Calcium = 50.5 [22.1, 86.5] mg/100g; Iron = 0.82 [0.44, 1.53] mg/100g; Protein = 19.1 [17.9, 20.4] %; Omega3 = 0.209 [0.112, 0.391] g/100g; Selenium = 21.1 [9.6, 44.1] μg/100g; VitaminA = 45 [11, 180] μg/100g; Zinc = 0.755 [0.467, 1.154] mg/100g (wet weight);