All of my levels are fine but I am wondering if I am overstocked. I have in a 20g high planted, 1 ram, 2 endlers, 2 ottos, 6 flame tetras, 5 cardinals, and 5 kulies. I barely ever see the kulies unless its feeding time or night. Everyone seems to be doing good, fish appear happy. Am I ok? If anything I would remove the cardinals because they have like zero personality.