I have one dempsey thats just a tank color with some Irredessent spots on his Gills, I purchased 2 others (breeding pair) and have them in a 400G tank, my tan keeps chasing the more decorative dempsey's around to the point of where I had to do some surgery on a tank and installed a divider. I want them to share the 400G but I dont want any to die, Whats up with them?
