i've been feeding it small dried shrimp, which it greedily accepts.
actually, the reason why im selling it is because it attacked and decapitated my spotted-sweetlips. The sweetlip had refused to accept any food from me and was, IMO, on the verge of starvation. (one week without food)
so far the eel has never attacked any of my other fish and i reckon it only got the sweetlips cuz the poor chap was gonna die soon.
***correction, it isnt 45cm long (my bad) its about the length of a chopstick.