Rare Dumbo White Betta Fish Female are stunning and colorful breeds of betta fish that are known for their vibrant blue coloration. These fish are relatively easy to care for, and they make great additions to any aquarium. If you are looking for a beautiful and unique betta fish to add to your collection, then a Rare White Betta Fish is a great option. These fish are relatively easy to care for, and they will thrive in a well-maintained aquarium.