The picture can be referenced: http://luohanyu.cc/baike/view-478.html.
1, Luohan strain: it is the earliest cultivated strain with simple color, mostly cyan, electro-optic and light color. The body is square, the head is divided into head, horn, dorsal fin and ventral fin, and the end is slender, which can "wrap" the caudal fin or touch it directly, and the feeling is connected, with emphasis on body shape and caudal shape.
Representative varieties include Laughing Buddha, King Kong Arhat, Flower God of Wealth, Thousand Arhats, Flower Monk Arhat, Red Flower Shouxing, Flower Arhat and so on.
2. Jinhua strain: it is a fish species cultivated after Lohan strain, and its body shape inherits Lohan strain, which gives people a sense of stability. Different from Luohan strains, they belong to a lively category with different colors, and the focus of appreciation is their body shape and bright colors.
Representative varieties are Cai Feng, golden phoenix Lohan, Golden Flower God of Wealth, Golden Flower Lohan, and the birthday star Lohan.
3. Flower horn strain: a rising star in the arhat fish, whose sexual maturity is earlier than that of arhat fish. It is characterized by bright colors, long body or triangle, dorsal fin and ventral fin spreading outward, triangular caudal fin as a whole and flat caudal fin. Most species have black or dark spots and body lines near the lateral lines, which form a thick line and are horizontally arranged in the middle of the body.
The representative varieties are Qihutou, Fire Rose, Brand-new, Fire that started a prairie fire, Gaoji Hua Jiao, Five-color God of Wealth and so on.
4. Pearl strain: Like Jinhua strain, it is quite rich in body color and tends to be triangular in shape. Most varieties have high heads, litchi heads, hard heads and few horns. The caudal fin is drooping and not fully extended. Most pearl strains have bright red heads and pearl-like gold spots on their bodies, and their sexual maturity is early.
Representative varieties include Tengku Lohan, Pearl Lohan, Golden Mercury, Colorful Lohan, Sweaty BMW, Fuxing Lohan Golden Pearl Lohan, Goldilocks, Pearl Kirin and so on.