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Macrognathus pentophthalmos, the Sri Lanka five-eyed spiny eel, is a small species of spiny eel that is endemic to freshwater habitats in Sri Lanka.Described as a common species as recently as 1980, for unknown reasons its population rapidly declined in the following years and there are no recent confirmed records. [3]
Gymnothorax polyuranodon, commonly known as the freshwater moray, is a species of moray eel that is native to the Indo-Pacific region, including Sri Lanka, the Philippines, Indonesia, Papua New Guinea, the northern coastline of Australia, and various islands in the western Pacific. Other common names include the many-toothed moray, spotted ...
There are 95 species of freshwater fish occur in the country, where 53 of those are endemic. 41% of all known species of fish of Sri Lanka are found in freshwater. There are about 70% of endemism of those fish. Most of them are listed into IUCN categories. Four Devario species were described in 2017 by Batuwita et al.
The animal life in freshwater comprises a great diversity. The organisms ranging from tiny protozoa to large mammals in size. Sri Lanka is a hydraulic civilization. First civilizations in Sri Lanka were originated closer to main rivers in Sri Lanka such as Mahaweli, Kelani, Malwathu and Gin Ganga. Rivers in Sri Lanka flow in a radial pattern ...
It is a tropical, freshwater eel which is known from East Africa, Bangladesh, Andaman Islands, Mozambique, Malawi, Sri Lanka, Sumatra, and Indonesia and recently from Madagascar. [8] The eels spend most of their lives in freshwater at a depth range of 3–10 metres, but migrate to the Indian Ocean to breed.
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]
The Anguillidae are a family of ray-finned fish that contains the freshwater eels.Except from the genus Neoanguilla, with the only known species Neoanguilla nepalensis from Nepal, [5] all the extant species and six subspecies in this family are in the genus Anguilla, and are elongated fish of snake-like bodies, with long dorsal, caudal and anal fins forming a continuous fringe.
Description. Ophisternon bengalense has an eel-like body with a flattened head with a single slit-like gill opening at the bottom of the back of its head and small eyes which can be seen through its skin. The dorsal and anal fins are reduced and form folds of skin on the rear half of the body, the pectoral and pelvic fins are absent.