My discus are doing very well ! I googled for tank mates. It listed siamese alage eaters, three spot gourmais & neon tetras. I bought 12 neon tetras 2 siamese algae eaters & 2 gourmais. One of my gourmais was killed quickly. ( not by the discus, but by being sucked up into the intake tube of my filter ) I put a sponge over each of the intake tubes as suggested my my LPS, but it didn't work. All, but 2 of the neons are gone. I don't expect the other 2 will last long. The 2 siamese algae eaters are fine. I guess the discus have told me what they want. ( no tank mates ) Since they seem very happy & healthy, I'll listen this time. My remaining Gourmais just hovers near the surface, never venturing out into the aquarium. I don't know why. The discus come right up to him & don't bother him @ all. Any ideas why this might be happening ?