I just received a pair of R. acuminatus, imported from Kenya. I don't know how much I can tell you as I have not had mine long.
Things I can tell you are they are the most active pygmy I have ever seen. They rarely stay on the bottom. Mine are up on branches and have gone to the top of the terrariums and hung off the screen. I have only seen the female eat, and that was just once. I feed them ff's, tiny phoenix worms, tiny silk worms, and have a few others I am yet to try. I keep them close to 70f and humidity drops to 40 and spikes to 80. They each have a uvb and a 25 watt light.
Let me know if you have questions and I will try to answer.