I have my pair, in a 10 gallon tall. I was told they like lower tanks but mine hang up at the top, in the bromeliads, all the time. They come down to get food on the floor when I feed them but they climb back up.
They like rocky nooks and tight spaces. They are also very small.
My trio have been in the 10 grow out for almost a year now, and they seem to always be on the ground, unless its sleep time, then they climb up. I don't find them to be all that small. They're around the same size as my Campana auratus, smaller than year old azureus, but much larger than my pumilio or my thumbs. They were small as froglets, but they grew up very fast.
Interesting. I got mine at 1 month oow. They got bigger but are no where near the size of my auratus. They dont pig out like my leucs do. There is always flies in their tank. They eat, and are healthy, but they only seem to eat when hungry.
How old are yours? Mine seemed to hit mature size within 3 or 4 months OOW, and haven't really grown since. They're thin frogs, and like yours, don't pig out like a leuc. They do have an agressive feeding response though. Mine came OOW back in August of last year.