1. I'm not sure about where you are, but in VA it is illegal to capture reptiles and then re-release them to another area. I have strong problems with you mixing these captive and wild species together and then releasing them back to the wild again. How do you know you aren't introducing something to the wild that that population didn't have? (and NO, a vet's "clean bill of health" does not mean it isn't carrying anything.. just that it isn't demonstrating a load of something they are looking for).
IM in Fl and it isnt illegal to do this. The only lizard that wasnt from Fl was my grass lizard and he didnt escape. The green and brown anoles are from FL, the little frog and ground skink are too. The only captive bred was my crested(duh) but when i bought it was in a little critter cage that was very dirty so i think it could have built some kind of immunity. (its still living today with another female in the same tank.)
2. I am sure that you mean well and have read up on things, but at 15 years old, you do NOT have the experience that older herpers have and you don't have the ability to predict the consequenses (sp?) It isn't anything against you, it's a scientific FACT.
Well i have many older people who taught me about keeping them, what to watch out for, what to expect ect, so it wasnt me just throwing the lizards together. They told me they should b fine just make sure the crested is ok when u raise the heat a little and keep it misted. I also did this in the winter so it wasnt really warm so the anoles didnt need a really hot basking spot.
3. If you truely want a mixed community... then make sure you have the largest cage you can get. If you don't have said cage in hand, do not add additional animals to that environment. (IE: I PLAN on getting XYZ cage next month...) I would also suggest introducing all occupants of said cage at the same time. Most people who plan mixed communities want to have some type of commonality or theme: African desert; madagascar; southwestern; etc.. where all the species would naturally be in the same area with the same requirements. Have you considered studying up on New Caldonia and finding out what other reptiles and amphibians are in the same environment as the crested geckos?
I was planing to get a larger 1 and i did but the problem was it was too large for me and my grandpa to handle it feel out of our hands. It was a 55 gallon. The only occupant that was in the 20g was the crested b4 they were all put in the cage. Me i didnt really think about doing a theme from a country or continent i just normally thought jungle/forest. Now im doing research looking at the islads comparing them ect. When u same environment do u mean like temperature and forest?
Big P