betta myths are so prevalent, especially right now, because they're quickly becoming the "hot trend pet" these days. so many people are buying them, but so few are doing it for an actual love of fish, but because their Paris Hiltonesque purse-dogs are no longer chic. they concoct myths about bettas preferring awful conditions so they can feel better about their substandard care, and as they tell other people their "facts" those people go out and plan their betta homes based on incorrect information they heard from their trendy friend.