These have been selectively bred to eliminate the Ventral Fins, giving then the perfect arrowhead shape. Not having Ventral Fins does not affect their ability to swim at all. These are a very pale but beautiful aqua blue/silver as Medium Angelfish have a body size without the fins of approximately a Dime. We are always willing to try and sex our fish for a customer, but we do not guarantee it. All Angelfish are unique and the coloration/pattern of each can vary.