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The Asian swamp eel is a freshwater, eel-like fish belonging to the family Synbranchidae (swamp eels). [ 4 ] Some work indicates that the species should be split into three geographical clades or cryptic species , although these were not given nomenclatural names, as the taxonomic synonymy was too complex to sort out at the time.
The marbled swamp eel, Synbranchus marmoratus, has been recorded at up to 150 cm (59 in) in length, [5] while the Bombay swamp eel, Monopterus indicus, reaches no more than 8.5 cm (3.3 in). Swamp eels are almost entirely finless; the pectoral and pelvic fins are absent, the dorsal and anal fins are vestigial, reduced to rayless ridges, and the ...
In some parts of Asia, swamp eels and one species of spiny eel, Mastacembelus erythrotaenia, are valued as food and sometimes are kept in ponds or rice fields. Except for a few mastacembelids, they are rarely seen in home aquaria. The fish have numerous sharp dorsal spines and belly thorns which, together with its sliminess make them extremely ...
The marbled swamp eel is one of the few fish found up-river of large waterfalls and is a major predator of tadpoles in locations that other fish cannot access. It is a sequential hermaphrodite , and this is an advantage when it colonises new areas or encounters severe habitats. [ 3 ]
Synbranchinae is a subfamily of swamp eel, consisting of six of the ten genera in the family Synbranchidae. The remaining genus, the monotypic Macrotrema is the only one in the other subfamily Macrotreminae. The subfamily occurs in the Neotropics, Afrotropics and Asia. [2]
Rakthamichthys is a genus of swamp eels that are endemic to India.Three species are known from the Western Ghats and one is known from Northeast India.. All species live underground, with one species (R. rongsaw) having a fossorial lifestyle and three species (R. digressus, R. roseni, and R. indicus) being troglobitic in nature.
The term "eel" is also used for some other eel-shaped fish, such as electric eels (genus Electrophorus), swamp eels (order Synbranchiformes), and deep-sea spiny eels (family Notacanthidae). However, these other clades , with the exception of deep-sea spiny eels, whose order Notacanthiformes is the sister clade to true eels, evolved their eel ...
These fish have an eel-like body. The largest species can reach a maximum length of 1 m (3.3 ft). [3] Very characteristic of this group is the long nose appendage with two tubulated nostrils. [3] Mastacembelids have a series of well-separated dorsal spines on their back, hence the name of their family, spiny eels. [3]