Macrognathus siamensis known with the common name Peacock Eel or Peacock Spiny Eel and has been recorded to reach a maximum length of 12 in. Although usually peaceful, they will eat any fish smaller than their mouths. 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