I have 5 surviving Molly Fry.
2 are slightly bigger and about a week older and the other 3 are obviously slightly smaller and one week younger. How old should they be or how large should they be before returning them to the main tank.
At present they are housed in a small 12x8x8 isolation tank. Although they are fine for the time being, they are approaching the size of the Neon Tetra's in the community tank. They would have to cope with a Large Silver Dollar, and 2 Medium to Large Angel Fish.
I'm not planning an iminent move but would like to have an idea of when it will be safe.

At present they are housed in a small 12x8x8 isolation tank. Although they are fine for the time being, they are approaching the size of the Neon Tetra's in the community tank. They would have to cope with a Large Silver Dollar, and 2 Medium to Large Angel Fish.

I'm not planning an iminent move but would like to have an idea of when it will be safe.