20g Long

All sorts. Firebelly toads, most salamanders, horned frogs, a pyxie frog, most small ground-dwelling lizards, small snakes...

You could get two leopard geckos, I always recommend them, I love mine.

I agree Leopard geckos are great but not for a half water setup.
Now if you want a plain desert setup, go with leos. If you still want the 50/50. There are various newts, salamanders, frogs or Most amphibians would work very well. Careful on mixing your herps though. You should always consider your herp tanks as a species only. Do to the fact of aggression and smaller animals becoming prey.
Or you can split it up. IF you do a search for EMG, you should be able to find posts of her Poison dart frog setups. She split hers up to have 2 frogs per tank.

Or you can get some ideas from the newt thread. Probably the most information thread on Newts and Amphibians this site has ever seen.
http://www.aquariacentral.com/forums/showthread.php?t=50139&highlight=Newts

But before you buy ANY herp, do your research, buy books and read as much as you can. Make sure there are no surprises at first. Treat this like you would fish and find as much as you can and you will have an enjoyable setup.

tricksterpup said:

I agree Leopard geckos are great but not for a half water setup.
Now if you want a plain desert setup, go with leos.

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Just want to say, leos aren't 'desert' technically. They are in that area, but more of a rocky terrain, not desert like sand. Just thought I'd put that in because people often confuse them with that and end up killing juvenile geckos due to impaction from housing them on sand.

kerrid said:

i've been looking at fire-belly frogs. anyone know a good website so i can do some research?

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Here is a good start.
http://www.anapsid.org/bombina.html

darkcirca said:

Just want to say, leos aren't 'desert' technically. They are in that area, but more of a rocky terrain, not desert like sand. Just thought I'd put that in because people often confuse them with that and end up killing juvenile geckos due to impaction from housing them on sand.

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Not all deserts are sand..

I personally keep all my juvies on paper towels and in smaller cages. Until they move up in the grams and get larger then I tend to change their surroundings.

tricksterpup said:

Not all deserts are sand..

I personally keep all my juvies on paper towels and in smaller cages. Until they move up in the grams and get larger then I tend to change their surroundings.

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Yea that is what I plan to do when mine hatch here in the next month (hopefully). My adults are on slate tiles, makes life easy as well. It's a desertish climate in a way, but that seems to be it. When one says desert most people assume sand, better to be safe then have a dead critter

for a half water half land setup, I'd would suggest a fire-bellied newt. They are very personable. IMO, alot more than fire-bellied toads.