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Eupercaria/misc (Various families in series Eupercaria) >
Labridae (Wrasses) > Julidinae
Etymology: Hemigymnus: Greek, hemi = half + Greek, gymnos = naked (Ref. 45335).
More on author: Bloch.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina revassocierade; djupintervall 0 - 25 m (Ref. 90102). Tropical; 30°N - 30°S, 33°E - 122°W
Indo-Pacific except the Red Sea.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 30.0 cm TL hane/ej könsbestämd; (Ref. 93095)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 9; Mjukstrålar i ryggfenan (totalt) : 10 - 11; Taggstrålar i analfenan: 3; Mjukstrålar i analfenan: 11. Lips thick with age (Ref. 1623). Several color phases with age and sex (Ref. 48636). Basic color pattern changes little with growth although the posteriormost white bands disappear on large individuals (Ref. 1602).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Found mostly on coral reefs and reef flats to at least 20 m depth. Juveniles secretive on inshore reefs. Large adults swim openly on reefs, singly or in small loose aggregations (Ref. 48636). Adults feed mainly by taking mouthfuls of sand and gravel, releasing sand from the gill opening after sorting the small animal prey and ejecting the inorganic fragments from the mouth. Gut contents may contain shrimps and 25% the crushed remains of the echinoids Echinometra and Diadema, these were large prey; remaining food material consisted of very small gastopods, bivalves, crabs, ophiuroids, foraminiferans, and unidentified eggs (Ref. 93095). Feed mainly on small crustaceans, mollusks and echinoderms (Ref. 9823). Minimum depth reported taken from Ref. 128797.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Oviparous, with distinct pairing during breeding (Ref. 205).
Randall, J.E., 2013. Review of the Indo-Pacific labrid fish genus Hemigymnus. J. Ocean Sci. Found. 6:2-18. (Ref. 93095)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: mindre kommeriell; Akvarium: Kommersiell
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 24.9 - 29.3, mean 28.3 °C (based on 3355 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00468 - 0.02039), b=3.07 (2.90 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.5 ±0.37 se; based on food items.
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Low vulnerability (20 of 100).
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Näringsämnen (Ref.
124155): Calcium = 35.1 [18.8, 107.6] mg/100g; Iron = 0.593 [0.350, 1.070] mg/100g; Protein = 18.6 [15.7, 20.8] %; Omega3 = 0.157 [0.081, 0.315] g/100g; Selenium = 29.4 [10.5, 74.1] μg/100g; VitaminA = 115 [36, 404] μg/100g; Zinc = 2.88 [0.91, 4.94] mg/100g (wet weight); based on
nutrient studies.