anoles will live together, they are a great reptile to start with, I love them, they where my first lizard and very active, but also they are very fast and great at escaping thru tiny gaps that seem far too small, or flying out of the tank when you open it - and sometimes they will choose the most inconvient spots to bask, like hanging of the rim of the tank ready to jump out as soon as you open it lol.
I use 10L only to gut load food tbh, its difficult to maintain a good 10C temperature gradient in such a small container, unless its long and low rather than fish tank proportions
Rather than finding something to fit into the tank, why not find something you'd like to keep and build its enclosure based on what it needs? otherwise a 10L makes an excellent gut loading tank, which you will need if you are thinking about getting a lizard
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