Freshwater Fish‎ > ‎Eel‎ > ‎

Macrognathus siamensis


Macrognathus siamensis
Peacock Eel
孔雀鳗
Macrognathus siamensis is a tropical fish belonging to the Mastacembelidae family.
As an aquarium fish it is known with the common name Peacock Eel or Peacock Spiny Eel
Macrognathus siamensis has been recorded to reach a maximum length of 30 centimetres. M. siamensis is a freshwater species, generally found at the bottoms of bodies of water. It is found in the rivers of Southeast Asia, including the Mekong, Chao Phraya, and Mae Klong. During the day, Macrognathus siamensis buries itself in the river bottom, coming out at night to feed on insects, crustaceans, and worms
Although usually peaceful, they will eat any fish smaller than their mouths (ex. Neon Tetra); like most eels, they need places to hide, such as driftwood or artificial decorations, coming out usually only at night to feed, hence they should be fed at night. They are notorious jumpers, and will use open areas and even external filters to escape.
Spiny Eel's are notoriously misidentified by fish stores. The M.aculeatus is identified by having a series of obliquely oriented bars down it's body, the dorsal and anal fins have a row of isolated spines followed by a long continuous soft portion, both fins extending to but not confluent with caudal fin. The pelvic fins are absent. The caudal fin is rounded. They have 14-20 dorsal spines. It is typically brown-grey in colour.
Comments