4 Red Bellies

[cane76]

i have been offered 4 baby pirahana from a friend who is getting rid of em either to me or the lfs.i was wondering about what eventual tank size they will need?.i have a spare 4 ft tank

 

[Tokis-Phoenix]

Im no expert on piranha, but as far as im aware you need somting like 30gals for the first piranha and 15-20gals for every one after that or somthing like that- its because although they are schooling fish they are still very agressive and when they feel they dont have enough space they can cannibalise each other.
Im sure though somone will come along soon with experience with keeping red belly piranhas though .