Oh the most beautiful goby in my opinion as its colours can confirm and also their small size make them suitable for most tanks. Seven years ago I brought 4 of them from Berlin, Germany but unfortunately they didn't survive the hot Summer. I can't tell you much about them.
I kept mine in a small 1 ft aquarium with fine gravel, coconut shells and java moss. I don't think they're difficult to breed and the males will become territorial between each other.