Ok guys here goes.....

[DiXoN]

how about some pike top minnows belonesox,
i also think guppys idea is good i passed up a nandus nandus before and regretted it

 

[big E]

Thanks Guppy I think you just helped me decide my next tank!!! This is a very popular topic, I think "mini monsters" should be made a category , you can also try dwarf pike cichlids or puffers, the pike top-minnows look like good predators too!