I have one Pictus and one Raphael catfish in 40g. aquarium. I am going to add there one more Pictus and other fish. The problem is what kind of fish is better to add. I like Gouramis a lot, but I have read that they need lots of plants (differently from Pictus who likes the open space) and they do not like active tankmates (Pictus are qiuet active). What do you think about it?