Being in San Francisco, we have a lot of mom and pop fish stores. There's one that I've been to (not to buy) that has a high turnover rate so the fish prices are very low. But, they want the customers to get a net and bucket themselves to get the fish you want. That means people with dirty, greasy hands are in the tanks and the customers really stress the fish buy moving all over the tank to get the fish they want. Even with the high turnover rate, they're still a lot of dead fish in their tanks. They have a lot of exotic fish and also a 4 foot lemon shark that they keep in a 5 feet by 5 feet tank. The shark can barely turn around!!! There's another fish store that have higher prices and the fish look healthy and the tanks are clean. They also have some exotic fish and they don't let people take pictures either.