I've been keeping four chocolate gouramis in my 20 gallon for about a week now. They seem to be adapting quickly, as they are starting to actively compete with the more voracious/active tetras for food. They also tend to spend most of their time foraging in a small group along the substrate and plants.
My temperature is 78-80F. I feed them freshly hatched brine shrimp, OSI flakes, Cyclops-eeze, and ON's Brine Shrimp Plus. I'll keep everyone posted on how they're doing --they are truly marvelous little fish. I love them already!
Carlos