The appearance of the monarch tiger-spotted pineapple is very gorgeous, with blue metal markings on the head and a large area of red coverage on the front of the body. The coat color of adult fish is quite stable. The better the individual's red coverage area, the most remarkable place is that the penultimate building line is half a building, which is also an important feature to distinguish whether it is Karel pineapple or not, even before the young fish have coat color.