Hello Plecocicho, I have 9 Canumas in total to go in the new tank.
You also mentioned feeding fruits, also after getting inspiration from Heiko's book I have tried many different fruits & vegetables, I chop them up and you very quickly find out what they will and wont take. Ive tried raspberries, strawberries, blackberries, bananas, grapes, blueberries, spinach, broccoli, tomatoes and peas.
The majority of the diet is a mixture of frozen food and I add abit of flake which oddly enough they love from these guys
http://www.ta-aquaculture.co.uk/ as they make all sorts of types of flake, including spirulina flake, earthworm flake, brineshrimp flake and beefheart flake.
Dan