Around two hundred species of moray eels exist but only one species of wolf eel. Identifying features: Sometimes referred to as the “Ugly old man of the sea,” the Wolf Eel has a bulbous head with a strong jaw and sharp teeth. It was given this name because of its powerful jaws and sharp teeth that it uses to crush hard-shelled creatures, such as crabs and abalone. The wolf is the largest extant member of Canidae, males averaging 40 kg (88 lb) and females 37 kg (82 lb). It requires a 125 gallon or larger aquarium with plenty of hiding places. It was kept alive in … Although they aren't closely related biologically, moray and wolf eels have a number of features in common and are a popular sight for divers. Picture courtesy Outdoor Writers Association of California. Despite its name, the Wolf Eel is actually a fish. Its common names include Carpet Eel Blenny, Eared Eel Blenny, and Green Wolf Eel. The maximum lifespan of a wolf eel is not known. The adult Wolf Eel ranges from light brown to dark gray in colour, with a long, dot-covered body. Its body is a brownish color with highlights of green. Age at maturity occurs at 4 to 7 years, suggesting these may be long-lived fish. Wolf-eels are believed to mate for life and a pair will occupy the same den year after year and possibly their entire life unless they are forced out by a larger wolf-eel or a Giant Pacific Octopus. Wolf can grow up to 240 cm (7.87 ft) in length, and 18.4 kg (40.5 lbs) in weight. The wolf (Canis lupus), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America.More than thirty subspecies of Canis lupus have been recognized, and gray wolves, as colloquially understood, comprise non-domestic/feral subspecies. Called doctorfish in Alaska, lo’l, lo’ox, or st’aaxaam in British Columbia. They begin pairing up at 4 years of age and reproduce at around 7 years. Rather the Wolf Eel is related to wolffishes, a group of bottom-dwelling carnivores that hide on the rocky ocean bottom. Young wolf eel are often orangish with dark areas merging into stripes at the rear of the body. Liveaquaria suggests a minimum tank size of 125 gallons, while many other sources suggest a minimum of 50. A moray eel is a true eel (family Muraenidae), whereas a wolf eel is a member of the wolffish family (family Anarhichadidae). Species: Anarrhichthys ocellatus (Ayres, 1855); from the Greek word anar-hichas (an ancient name for a fish which resembled this species) and the Latin word ocellatus (eye-like spots).. Alternate Names: Moray eel. In fact, I highly recommend this fish be kept with other larger aggressive fish that cannot fit into its cavernous mouth; however, wolf eels generally do best in a species-only tank. Just out of curiosity, I’ve been doing some research on green wolf “eels” and have found a lot of conflicting information about their tank requirements. 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