best fish I have ever owned. Very hardy and adapts to the environment pretty fast.
mine was shy at first but now he's swimming constantly, making little splashes every now and then.
advice: some people say knifes do not do well with other fish. they do, you just have to be careful. my knife has/had no problems with my 5 gourami. The only fish he ever ate was a shark, and that was because of the size.
if you do put other fish in the tank with him, make sure they are big enough that the knife cannot fit them in his mouth. if they can fit in his mouth, you might as well say goodbye to the fish that day.
good luck! I think you'll enjoy the knife really well!
