Awesome.....gives me hope for my black skirt tetra that is about to burst!
I think lots of most and plant cover to hide in is the answer. The great thing about a mature planted tank is how close to a natural environment it can be. This is the 2nd sp. of fish that has spawned in this tank. I had Celyon Combtails pair off and Spawn in there last April. That of course was not a surprise.
The old school way to breed barbs was a bare tank with the bottom covered with marbles, or round stones marble size. The female(s) were placed in and conditioned with lots of food & w/c until they were gravid. Then the boys were added. After they spawn the adults are pulled out. Filtration was a sponge filter.