rhamphichthys

[Xeno]

Hey,
right now rhamphichthys sp. (I think those are r. rostratus/Ossa knifes) are available in Germany.
It´s pretty hard to find good information about them.
So I hope here are some people who keep/kept those rare knifes.

How large will they grow?
Most sources declare an estimated size of 45-50cm in length.

How large should a tank be to keep one of those fish?

 

[Hendre]

Probably a 2m x 1m tank would work. Apparently they need constant feeding when young in a similar fashion to african arowana