If you are smart you will never put fish and Amphibians together. It can not work. They both require totally different conditions. Frogs poo and piddle in the water and that will eventually poison...
yes you can sometimes but bewere that when another goldfish is with a nother goldfish they can fight all lot even when it comes to food.if you put them together probley on of them won't last long (...
Most likely the answer is no. Fish are opportunist and will take any opportunity they get to eat another fish. If they smaller goldfish can fit in the larger goldfish's mouth than it will get eaten....