Originally Posted by veganchick
What kind of tank did he have? if it was a bowl or vase, there is ur problem.
he was actually in a 2.5 gallon tank by himself w/ some fake silk plants and a lil tiny castle where he liked to sit on or underneath it.... I think maybe it happened b/c at nite, his temp drops about a good 5 degrees (cuz I turn off his lights), and in the mornin (cuz I turn on his lights) it goes up a few degrees. that's my hypothesis... no... I wouldn't put my bettas in a vase/ bowl... I wouldn't want him to live in a small, not- even- a- one gallon- bowl. :)