Mediterranean moray

The Mediterranean moray (sometimes also called Roman eel, Muraena helena,زريمباية) is a fish of the moray eel family. It has a long eel-like body and is found in the eastern Atlantic Ocean and Mediterranean Sea. Its bite can be dangerous to humans.

Mediterranean moray

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anguilliformes
Family: Muraenidae
Genus: Muraena
Species:
M. helena
Binomial name
Muraena helena

Appearance and characteristics
Muraena helena showing typical moray eel morphology: robust anguilliform shape, lack of pectoral fins and circular gill openings

The Mediterranean moray has an elongated, eel-like body and can reach a length of 1.5 meters and weigh over 15 kilograms. Its coloration varies from dark grey to dark brown with fine dark spots. The skin is slimy and without scales. The dorsal fin begins behind its head and continues to the caudal fin (fused with the anal fin). Pectoral fins are absent, teeth are long and sharp-pointed (like other morays), the mouth is long and robust and reaches behind the gills.

Ecology
Captured morays on fishmarket in Madeira

The Mediterranean moray inhabits the coastal waters of the eastern Atlantic Ocean from the British Isles to the coast of Senegal; the waters of the Canary Islands and the Azores; and the Mediterranean Sea. It prefers rocky bottoms and lives in depths of from 16.5 to 264 feet (5 to 80 meters). It is a solitary and territorial species. The Mediterranean moray spends most of the day in cavities and clefts between rocks and is more active at night. It hunts fish, crayfish and cephalopods, but also feeds on dead animals.

The Mediterranean moray's reproduction is not well known. They spawn about 60,000 eggs into open water, from which planktonic transparent leptocephali hatch.

One parasitic crustacean,[2] the trematode Folliculovarium mediterraneum[3] and the flatworm Lecithochirium grandiporum[4] are parasites of the Mediterranean moray.

Human importance

The bite of the Mediterranean moray can be dangerous mainly due to the mildly toxic slime of its skin. It can be utilized fresh and eaten broiled, boiled and baked. The skin can be used for leather.[5]

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References
  1. NatureServe (2013). "Muraena helena". IUCN Red List of Threatened Species. 2013. Retrieved 15 December 2014.CS1 maint: ref=harv (link)
  2. P.Sasal et al.,Determinants of parasite species richness in Mediterranean marine fishes, Mar.Ecol.Prog.Ser. Vol. 149: 61-71. 1997
  3. Bartoli,B et al.First report of a species of Folliculovarium Gu & Shen, 1983 (Bucephalidae: Prosorhynchinae) from European marine waters, with the description of F. mediterraneum n. sp. Systematic Parasitology, Vol 56, Number 2, Oct. 2003
  4. P.Bartoli1, D.I.Gibson, The status of Lecithochirium grandiporum (Rudolphi, 1819) (Digenea: Hemiuridae), a rarely reported and poorly known species from the Mediterranean moray eel Muraena helena L. in the Western Mediterranean. Systematic Parasitology, Vol 68, 3 Nov. 2007
  5. Muraena helena, Mediterranean moray: fisheries, aquarium
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