I just thought of something... aren't fancy goldfish and comets cold water fish, and loaches tropical fish? I have to agree with aquariumfishguy... looks like you are fully stocked (and most definately overstocked). I would see if you can return the comets to the lfs (and maybe the loach too, if it's a tropical water loach and especially if it's a clown loach, as they grow huge and need at least 2 others to keep the truly happy).
~Tara
~Tara