It's been two weeks and my Walmart Fishy isn't doing too well. He had apparently bitten a part of his tail off during his "cup on a shelf days" and his tail now is blackening and seems to be thinning at the edges and is becoming tattered. He's in a 1 gallon Aquaview and my question is, do you think that leaving the light on ALL the time (to keep the water warm) is harmful to the fish? The water remains luke warm to the touch and the fish swims about, but I wonder if the light could be stressing him. I'm going to take him home tonight (home from work) and put him next to my first betta in something more round shaped as Aquaview is triangular and caused my first fish some problems. (you can tell from his swimming that the first betta actually prefers a 14 cup coffee pot to the 1 gallon Aquaview because in the pot, he can swim continuously in a circular pattern without having to stop or turn around.) At home, the air around the stove keeps water-filled bowls warm enough, but at work, I've been relying on the aquaview's light fixture. (Sorry if I'm rambling, but I'm writing while on break). Are there any concerns to a light remaining on?

