My dovii and umbee recognize me. When ever they see me, they only flare but never glass bang. They wait for food when they see me, but when they see my friends they are glass banging and are going nuts. It's actually entertaining to watch how they react. I have a black friend and the only cichlid that actually acts strange around him is the red devil. That red devil is terrified of him, I believe cichlids can see colors and probably react to them differently.
