I use silver dollars with my jack dempsey in a 300 and it works well, but.........
silver dollars get pretty big and are super skittish, Mine are about 4" now and they get spooked really easily. If mine were in a 55 I'd be worried about them breaking the glass without a doubt. I'm actually considering pulling the 6 of them out and adding some bottom dwellers because of the commotion they create. They spook the other fish in the process. They are total pigs too, so food competition is pretty high with them
small ones could be beneficial, but as they grow larger you may have problems unless you keep them in a larger system.
Livebearers might be your best bet. I had my jack dempsey in with a large school of 2"tiger barbs and he eventually ate them all. I would think any kind of tetra would fare a lot worse.
silver dollars get pretty big and are super skittish, Mine are about 4" now and they get spooked really easily. If mine were in a 55 I'd be worried about them breaking the glass without a doubt. I'm actually considering pulling the 6 of them out and adding some bottom dwellers because of the commotion they create. They spook the other fish in the process. They are total pigs too, so food competition is pretty high with them
small ones could be beneficial, but as they grow larger you may have problems unless you keep them in a larger system.
Livebearers might be your best bet. I had my jack dempsey in with a large school of 2"tiger barbs and he eventually ate them all. I would think any kind of tetra would fare a lot worse.