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The fire eel (Mastacembelus erythrotaenia) is a relatively large species of spiny eel. This omnivorous freshwater fish is native to Southeast Asia but is also found in the aquarium trade. [1] [3] Although it has declined locally (especially in parts of Cambodia and Thailand) due to overfishing, it remains common overall. [1]
Mastacembelus is a genus of many species of spiny eel fish from the family Mastacembelidae.They are native to Africa (c. 45 species) and Asia (c. 15 species). [4] Most are found in rivers and associated systems (even in rapids [5]), but there are also species in other freshwater habitats and a particularly rich radiation is found in the Lake Tanganyika basin with 15 species (14 endemic).
[23] [24] As open ocean voyagers, eels need the carrying capacity of the swimbladder (which makes up 3–6% of the eel's body weight) to cross the ocean on stored energy alone. Because the eels are catadromous (living in fresh water but spawning in the sea), dams and other river obstructions can block their ability to reach inland feeding grounds.
The second is Anguilla ignota, which is the fossil that represents the ancestor to all extant freshwater eels and marks the upper boundary of the age of anguillidae. Using these two fossil calibration points, freshwater eels are said to originate between 83 million years ago and 43.8 million years ago.
Most eel species are nocturnal, and thus are rarely seen. Sometimes, they are seen living together in holes or "eel pits". Some eels also live in deeper water on the continental shelves and over the slopes deep as 4,000 m (13,000 ft). Only members of the Anguilla regularly inhabit fresh water, but they, too, return to the sea to breed. [10]
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 December 2024. Species of fish American eel Conservation status Endangered (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Anguilliformes Family: Anguillidae Genus: Anguilla Species: A. rostrata Binomial name Anguilla rostrata ...
The most commonly found Spiny eels in the Aquarium trade are the Macrognathus and Mastacembelus from Sri Lanka, China, Southeast Asia and India. These include such eels as the Peacock and Striped Peacock, the Tire Track and or White spotted eel, the Zig Zag, Fire, Siamese, and Zebra eels.
Fire eel: Mastacembelus erythrotaenia: 100 cm (39 in) Tire track eel: Mastacembelus armatus: 90 cm (35 in) Peacock eel: Macrognathus siamensis: 30 cm (12 in) They require clean water and are vulnerable to parasites, fungal diseases, and the copper-based drugs used to treat these conditions. [79] 73-82 °F (23-28 °C) [80] 6.0-8.0 [80] Zebra ...