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Anguilliformes (Eels and morays) >
Muraenidae (Moray eels) > Muraeninae
Etymology: Gymnothorax: Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref. 45335).
Eponymy: Sir John Richardson (1787–1865) was a Scottish naval surgeon, naturalist and Arctic explorer. [...] (Ref. 128868), visit book page.
More on author: Bleeker.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
marina revassocierade; djupintervall 0 - 15 m (Ref. 86942). Tropical; 30°N - 23°S
Indo-Pacific: Red Sea and East Africa (Ref. 33390) to the Society Islands, north to the Ryukyus, south to the Cook Islands; Mariana and Caroline islands in Micronesia.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 34.0 cm TL hane/ej könsbestämd; (Ref. 90102)
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 0; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 0; Ryggkotor: 112 - 117. Dark brown with darker mottling, a lighter chin and throat, and white margins around the lip pores.
Inhabits shallow lagoons and seaward reefs. Often under large, loose dead coral pieces (Ref. 30404). Feeds on small fishes and crustaceans (Ref. 89972). Solitary (Ref 90102).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Chen, H.-M., K.-T. Shao and C.T. Chen, 1994. A review of the muraenid eels (Family Muraenidae) from Taiwan with descriptions of twelve new records. Zool. Stud. 33(1):44-64. (Ref. 6934)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Fiskeri: mindre kommeriell
Verktyg
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 25.1 - 29.3, mean 28.3 °C (based on 2469 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00048 (0.00025 - 0.00091), b=3.28 (3.12 - 3.44), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (24 of 100).
Nutrients (Ref.
124155): Calcium = 57.9 [32.1, 113.3] mg/100g; Iron = 0.554 [0.324, 1.119] mg/100g; Protein = 18.8 [16.5, 21.4] %; Omega3 = 0.114 [0.050, 0.329] g/100g; Selenium = 26.6 [14.2, 56.7] μg/100g; VitaminA = 99.6 [29.0, 312.8] μg/100g; Zinc = 1.15 [0.80, 1.62] mg/100g (wet weight);
![Image of Gymnothorax richardsonii (Richardson\](/images/thumbnails/jpg/tn_Gyric_u2.jpg "Image of Gymnothorax richardsonii (Richardson\")
