Range and Identity
Macrognathus siamensis occurs in the Mekong, Chao Phraya, Maeklong and other Thai drainage regions. A spiny eel is not a true Anguilla eel, so an ocean-spawning life cycle should not be assigned from the shared common word eel.
Habitat and Behavior
Adults use slow-moving or standing water and bury in silt, sand or fine gravel, often leaving only part of the head exposed. Flooded forest is also used. Dusk emergence connects a sheltered daytime position with a more active feeding period.
Food and Life History
The upper reference is thirty centimeters standard length. Foods include bottom-associated insect larvae, crustaceans and worms. An independent maximum mass and a regular migratory route are not established in the checked account.
Field Note
Record time of day and whether the fish was buried or moving above the bottom. Those details help explain why observations from the same locality may show very different levels of activity.
All Lakes With Spotfin Spiny Eel
Browse lakes and reservoirs with documented Spotfin Spiny Eel records, listed alphabetically. Records do not establish current abundance or public access. Check the evidence and managing authority for the water you choose.
No published lakes are currently linked to this species in our confirmed records.