Well.. not sure about the plants atm... how many do you have? What size tank are they in? Any other tankmates?
ahh here we go from the profile:
Origin: Found over a wide area within parts of Brazil, Bolivia, Guyana, Peru and Venezuela: rivers of the north Guyana Shield, Rio Paraguay basin, and the western basin of the Amazon. It inhabits densely planted tributaries with slow water movement. Compatibility/Temperament: This is a peaceful schooling fish growing to almost 6 inches in size. They have a tendency to consume several plants, mostly those with soft foliage as they are largely vegetarians by nature. They are shoaling fish and must be in a group, minimum six,and they should not be kept with fish that are smaller, as these will probably be eaten.
Read more: http://www.tropicalfishkeeping.com/p...#ixzz1UlzNz8Ff