The Yellow Angelfish is a bright lemony yellow color that covers its whole body with no other markings. Yellow Angelfish are all born female. If you are looking to get a breeding pair, it is better to buy them both in their juvenile stage, with one fish larger than the other, and wait for them to mature. The larger and more dominant fish will undergo a hormonal change to male. Once the fish has grown into a male, some will develop a black mark on their faces, but other than that, they develop no other markings than their eye catching bright yellow.