arowana and cardinals

[mani]

hey guys just see all these setups on the net where they have full grown arowanas living with cardinals???

how do they do that... i mean wouldnt the cardinals end up as expensive feeders??

[aquaholic99]

Possibly but a well fed arow would be too lazy to chase cardinals. Cardinals are probably quite cheap ehere you have seen this anyway. (and neons even cheaper)