as everyone has said... don't mix species. With that said Tree frogs are a lot of fun, but it depends on what you want them for. for example... my Whites Tree Frog (dumpys) are fun to watch and are very acitve during periods of the day and most of the night. You can watch them eat and play... and you can hold them. They are about the easiest bread of tree frog for beginners. The only thing about dumpys is they love to play and make a mess out of their tank. They are like 2 year olds. With that said... I would think everyone should have a set of dumpys. I love mine. Now I also have a pair of red eye tree frogs. They are probably the most beautiful of all the tree frogs. Most photographed. They never make a mess of the tank, but they never move in the day time. well sometimes they will pop there head out and look around but for the most part they are stealth. you never see them eat... or pay. They just slowly move from one plant top to the other. I have never seen mine in the water. You will just find a neat poop on a leaf and a bit of ground cover in the water so you know they are eating and bathing. One of my red eyes likes to be held and loves to get out of the tank. The other red eye wishes I would go on vacation more often.... LOL. With that said. I would not be without my red eyes or my dumpys. but If I could only have one pair it would be dumpys. I have 2 40 gallon tanks. One tank has 2 red eyes and one tank has 4 dumpys. I think it is enough room for them. Just have to change the water every night before bed. They like a clean hot tub to play in while I am sleeping. For fun one night after your frogs are all setup. turn on a red light in the middle of the night when you are up for a drink of water and watch them play. They leap from leaf to leaf and from the water to the glass. then climb around and around and around. Very entertaining. My grandkids are able to handle the dumpys. but I don't let them get the red eyes out. Just the thoughts of a dumpy lover.