I'm maybe planning to get a few of these, but I have a few questions:

1. Wich one of these two would you reccomend?
2. The thing is, I'm maybe planning on breeding and how many can I keep in a 20 gallon tank (both species, not together)?
3. Wich one of these is the easiest to breed?

The thing is, if I'm going to breed Xenopus and find out I have two females for example I guess it would be hard to fit another frog in that tank?
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CokeOfMan