Yes, ornamental bettas are the ones you find in American stores. One should never use them for fighting, though I suspect there a lot of ignorant people who buy two males to watch them fight. There are actually three species used in fighting. The fight methods are different for each. In a traditional fight, the fish are rarely injured severely. The fight lasts no more than one hour. Most of the fight is flaring and quick rushes at each other. Remember these fish are conditioned so they have very very hard scales. The winner is declared when one fish backs down. After an hour, if both fish are still sparing, the fight is declared a match game and the fish are removed. Yes, there are some people who want a big bad killer of a fish, but its not all that common.