Introducing subadult african clawed toads to adult tank

[xxianxx]

I have a tank with three adult clawed toads about 3 inches nose to bum, i also have two juviniles about 1 inch , at what size can i safely introduce them.

[Jenste]

I would wait until the smaller frogs are over 50% the size of the largest frog you have.

So in your case, I would wait until the smaller frogs are at least 1.5 inches if not larger. If you add them in any smaller then you are risking having the small frogs eaten by the larger frogs.