Last Friday, Sarah and I received 2 Brilliant Turquoise discus and 16 cardinal tetras from Discus Hans. The fish arrived in the morning via fedex and were shipped in a styrofoam boxed. They are really beautiful, confident eaters as soon as we let them out of the bag and best of all they have calmed down the overall aggression level in the tank.
Obviously, part of the aggression problem was just the fact that we only had four discus in the tank. It’s recommended that they be kept in groups of atleast six, which makes sense when you realize that discus live in groups of up to 1,000 members in the wild.
As you can see, we also decided to add some lighter colored sand above our flourite subtrate. Discus will actually darken if living above a dark substrate. Pigeon based strains of discus also develop more peppering over a dark surface. We didn’t know that when we setup our tank, unfortunately. We didn’t want to remove our existing substrate, so we just sprinkled a thin layer of sand over the black flourite.