he was wonderful, beautiful and healthy when we got him, and was great, if a little aggressive, in our community tank until this evening when i found him swimming erratically upside down and then resting nose-down in the gravel. i got him out of the tank and had the new thread screen open to ask what i could do when he died in his cup. i really don't know what went wrong, outwardly he still looks perfectly fine, there are no signs of sickness or injury, the whole thing came on in a matter of minutes. i'm so sorry Odie, we miss you so much.