I am kind of in your shoes, I have 4 gray tree frogs and I'm new to frogs, though I've had other herps in the past (iguana and chameleons) I personally would not feel comfortable mixing the species at this point. You also have to make sure that anoles are found in the wild with your specific type of frog, they do live in the same environment as frogs, but only a select few.

Also, keep in mind, if you choose to do it and one of the types of animals appears to be stressed, you are going to go through the same issue again of getting another viv or getting rid of one of them.

I know the plants will grow, but when adding more animals, you are going to need far more hiding places than that. I've had this viv a month...



...and since that specific picture, I've added 2 ficus trees and 2 ground cover plants. Currently I only have 1 tree frog in there (10 gallon tank)

I hope that helps you some!! Good luck with your decision.