K.L.
They are called fighting fish for a reason.. We had 2, in their own fish bowls, but we would set them side by side and they would go crazy. We called it "going to the fish gym" and then we would move them apart and they would calm down a bit. Some are more active than others. Whats its name? We just aquired a gold fish and my grand daughter named it Ballerina. When she feeds it, it sorta stands on its tail fin and does a cute ballerina spin to eat.