Not a frog but here are some photos of my female Sphaerodactylus macrolepsis 'mimetes', she lives alone in a heavily planted 45x45x60cm zoomed and is around 7cm nose to tip of tail. I'm desperately trying to find a male to pair with her but no luck so far.
She's very characterful and as you can see is not shy, she came right out to investigate the camera.
Although her appearance is quite unremarkable these make for really fascinating vivarium inhabitants, I keep her a little dryer than most dart frog vivs but she has constant access to both very wet and very dry areas and she fully utilizes both. It's amazing watching her hunting through the tank and a strange sensation when they suddenly swivel both eyes (which move independently like a chameleon) to make eye contact with you.
She seems to generally hideout among the roots of a larger bromeliad towards the top of her vivarium. I introduced 10+different species of soil microfauna in her vivarium when I set it up and all of these seem to be reproducing in the tank - these geckos are so tiny there is always more than enough for a single specimen to eat. I only add feeder insects for supplementation and she can, and does, bask under a 2% UVB CFL bulb.
The sequence of photos shows her in her favorite morning basking spot, then coming to see what I'm up to at the front of the cage.
I have heard of people keeping these successfully with dart frogs but personally I wouldn't. Happy to answer if people have any questions about care.