Join Date: Jul 2010
Location: Orange County, CA
Yes, four would be okay, though you could probably go for five. Yep, mine live fine with no equipment, just a tank, water, and a heater. My females go after the wafers, but the cories don't really care. Just make sure the tank is lidded. When they come up to breathe, they have to turn upside down (downward facing mouths) and usually jump out of the water. Mine get hungry, eat, then get really fat and don't do much.
I only have 1 betta left, but he's a cool blue marble!