I've never had a fish before and want to be sure I'm doing what I should to keep my new Betta happy and healthy. It's only 2 days old, came from Petco, and doesn't look as energetic as when it was in it's pint size container. I have him in a round fish bowl (about 2 1/2 - 3 quarts) with green gravel on the bottom. By the way, are air bubbles on the gravel a sign of anything bad?
I was told to feed him the dried bloodworms every other day and to change the water with tap water (we have a water softener) when it looks like it needs it, about once a week.
So far it hasn't eaten anything that I can tell. Do I change about 50% of the water? We had a cold night and my house temp is currently only 66 degrees. Will my Betta be okay? Should I get a heater? Is it okay to keep a light on overhead for it? Do they prefer smaller spaces? Should I get a plastic plant for it?
So many questions! You're help is greatly appreciated!