I currently have a tank setup with 2 catfish and 3 RBP and looking to add some new RBP's so that they appear as a more impressive shoal. Has anyone had any experience of this or will the new piranha be seen as a threat to my current ones?
Move all the decor around in the tank so any territories are broken. If you have more buckets, take all the original fish out first, change everything and do a 50% water change so they all think they're starting in a new set-up