Pseudochromis fridmani T.B, commonly known as the Purple Dottyback, is a popular saltwater aquarium fish due to its vibrant color and relatively easy care. They are known for their active nature and are typically kept in reef tanks. However, breeding them in captivity can be a bit tricky due to their territorial behavior. Male vs. Female: Males of Pseudochromis fridmani are typically slightly larger and more colorful, with a more intense purple coloration, while females are generally more subdued in color.