I have 3 Obliquiden Zebras, 2 Ngara Flametails, and 1 Regal Blue (that they included free w/ my order). The tank is in my living room, not near any windows. No kids running around, no one tapping on the glass or any other disturbances. I had Discus for years in the same tank and same location with no problems at all (they actually would eat from my fingers), and also Jack Dempseys and a Firemouth, again with no problems at all. In preparing for the new fish I did a 20% water change, added an aragonite substrate to help maintain a higher pH, and made sure the tank parameters were all okay. In all my years of fish keeping this is the first time that I've experienced this. And I'm not knocking the fish from Live Fish Direct; like I said they all arrived alive and seemingly healthy, and I am satisfied with their selection and prices. I was only making a comment on the fact that I am a little disappointed that they didn't bother to get back to me to address my concerns.