Diagnostic Description
provided by Fishbase
Characterized by mottled color and tooth bands with a separated inner series. The only other species within its range with these characters is Anguilla marmorata, but that species has a longer dorsal fin (Ref. 9828).
- Recorder
- Crispina B. Binohlan
Diseases and Parasites
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Edwardsiellosis. Bacterial diseases
Migration
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Catadromous. Migrating from freshwater to the sea to spawn, e.g., European eels. Subdivision of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.
Trophic Strategy
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Diadromous. They move fom marine to fresh waters as juveniles and return to the sea as adults. These eels live in a variety of freshwater and estuarine environments including coastal lagoons, rivers, creeks, swamps, lakes and farm dams (Ref. 26507). Longfin eels prefer riverine habitats (Ref. 26509). Glass eels enter estuaries mainly in summer and autumn. Mainly nocturnal feeders with a well developed sense of smell for locating prey. Diet includes crustaceans, molluscs, aquatic and terrestial insects (Ref. 26514), and bony fish (including elvers) (Ref. 26513, 26514). Feeding patterns follow the seasons - feeding is most intense at night during spring and summer (Ref. 2906).
Biology
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Occur in coastal lagoons, rivers, streams, lakes, swamps and farm dams, but prefers riverine habitats (Ref. 26509, 44894). Usually found in deep waters of reservoirs well away from the shore. Mature adults undertake annual spawning migrations to oceanic waters (Ref. 44894). Mainly nocturnal feeders. Feed on crustaceans, mollusks, aquatic and terrestrial insects, fish including elvers and native trout. Maximum size for female longfin eel taken from Ref. 6390. A reasonably good angling fish which may grow to 22 kilograms (Ref. 44894).
Importance
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fisheries: commercial; aquaculture: commercial; gamefish: yes
Speckled longfin eel
provided by wikipedia EN
The speckled longfin eel, Australian long-finned eel or marbled eel (Anguilla reinhardtii) is one of 15 species of eel in the family Anguillidae. It has a long snake-like cylindrical body with its dorsal, tail and anal fins joined to form one long fin. It usually has a brownish green or olive green back and sides with small darker spots or blotches all over its body. Its underside is paler.[1] It has a small gill opening on each side of its wide head, with thick lips. It is Australia's largest freshwater eel, and the female usually grows much larger than the male.[1][2] It is also known as the spotted eel.
Description
Long-finned eels can grow to 1.6 metres and 22 kg (although generally to 1 metre) for females while males are much smaller at 650 mm and 600 g.[3] Landlocked eels have been reported to grow to 3 metres (10 feet).[2]
Distribution
The long-finned eel is a native of New Guinea, eastern Australia (including Tasmania), Lord Howe Island, and New Caledonia.[1] It can be found in many freshwater areas, including creeks, streams, rivers, swamps, dams, lagoons, and lakes although generally more often in rivers than lakes.[2]
Breeding and migration
Like other Anguilla species, the eel lives predominantly in freshwater rivers and streams, but is born in deep waters of the ocean. Each species has its own spawning grounds; spawn use ocean currents to return to their adult species range. The long-finned eel spawns in the Western arm of the Southern Equatorial Current,[4] which carries spawn to the eastern coast of Australia. This species is panmictic, spawning throughout the year.[5]
References
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^ a b c Allen, G.R.; Midgley, S.H.; Allen, M. (2002). Freshwater Fishes of Australia. Perth, Western Australia: Western Australian Museum. p. 64. ISBN 0-7307-5486-3.
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^ a b c Merrick, J.R.; Schmida, G.E. (1984). Australian Freshwater Fishes, Biology and Management. Sydney: Author. pp. 61–63. ISBN 0-9591908-0-5.
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^ Robert McDowall, ed. (1996). Freshwater Fishes of South-Eastern Australia (Rev Ed). Sydney: Reed Books. pp. 42–43. ISBN 0-86622-936-1.
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^ Aoyama, Jun (2009). "Life History and Evolution of Migration in Catodromous Eels (Genus Anguilla)" (PDF). Aqua-BioScience Monographs. 2: 23. doi:10.5047/absm.2009.00201.0001. S2CID 53319110. Archived from the original (PDF) on 2020-01-26.
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^ Shen, Kang-Ning; Tzeng, Wann-Nian (2007). "Population Genetic Structure of the Year-Round Spawning Tropical Eel, Anguilla reinhardtii, in Australia". Zoological Studies. 46: 451. CiteSeerX 10.1.1.654.2742.
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Speckled longfin eel: Brief Summary
provided by wikipedia EN
The speckled longfin eel, Australian long-finned eel or marbled eel (Anguilla reinhardtii) is one of 15 species of eel in the family Anguillidae. It has a long snake-like cylindrical body with its dorsal, tail and anal fins joined to form one long fin. It usually has a brownish green or olive green back and sides with small darker spots or blotches all over its body. Its underside is paler. It has a small gill opening on each side of its wide head, with thick lips. It is Australia's largest freshwater eel, and the female usually grows much larger than the male. It is also known as the spotted eel.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia authors and editors
