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The European conger is the heaviest of all eels. Eels are elongated fish, ranging in length from 5 cm (2 in) in the one-jawed eel (Monognathus ahlstromi) to 4 m (13 ft) in the slender giant moray. [ 7 ] Adults range in weight from 30 g (1 oz) to well over 25 kg (55 lb). They possess no pelvic fins, and many species also lack pectoral fins.
Eel life history. Eels are any of several long, thin, bony fishes of the order Anguilliformes. They have a catadromous life cycle, that is: at different stages of development migrating between inland waterways and the deep ocean. Because fishermen never caught anything they recognized as young eels, the life cycle of the eel was long a mystery.
The American eel (Anguilla rostrata) is a facultative catadromous fish found on the eastern coast of North America. Freshwater eels are fish belonging to the elopomorph superorder, a group of phylogenetically ancient teleosts. [2] The American eel has a slender, supple, snake-like body that is covered with a mucus layer, which makes the eel ...
Uropterygiinae Fowler, 1925. Moray eel. Moray eels, or Muraenidae (/ ˈmɒreɪ, məˈreɪ /), are a family of eels whose members are found worldwide. There are approximately 200 species in 15 genera which are almost exclusively marine, but several species are regularly seen in brackish water, and a few are found in fresh water. [ 2 ]
Most eels live in the shallow waters of the ocean and burrow into sand, mud, or amongst rocks. A majority of eel species are nocturnal and thus are rarely seen. Sometimes, they are seen living together in holes, or "eel pits". Some species of eels live in deeper water on the continental shelves and over the slopes deep as 4,000 metres (13,000 ft).
Muraena ophisRüppell, 1830. Poecilophis nebulosa(Ahl, 1789) The snowflake moray (Echidna nebulosa), also known as the clouded moray among many vernacular names, is a species of marine eel of the family Muraenidae. [ 3 ] It has blunt teeth ideal for its diet of crustaceans, a trait it shares with the zebra moray (Gymnomuraena zebra).
The New Zealand longfin eel is a very long-lived fish, with records of females reaching 106 years old and weighing up to 24 kg. [5][9] They have the slowest growth rate of any eel species studied, just 1–2 centimetres a year. [10] Longfin eel seen in a river at night in the Tararua Ranges.
The adult lamprey is characterized by a toothed, funnel-like sucking mouth. The common name "lamprey" is probably derived from Latin lampetra, which may mean "stone licker" (lambere "to lick" + petra "stone"), though the etymology is uncertain. [3] Lamprey is sometimes seen for the plural form. [4]