Not marine fish, "three flowers and one island" refers to four kinds of rare freshwater fish in Songhua River basin, which are locally called octopus (mandarin fish), bream (marginal flower fish), seasonal flower fish (sea bream, crucian carp flower fish) and island fish.

Australian flower fish is mandarin fish, also known as mandarin fish, mandarin fish, seasonal flower fish and fat mandarin fish. Tall, with flat sides and a raised back. Inhabit in still water or slow-moving water. There is a habit of lying at the bottom of the lake at night for food. Fierce fish eat other fish and shrimp.

Bream, Changchun bream, belongs to CYPRINIDAE. Commonly known as bream, long-body bream, grass bream, oil bream and so on. The side of the body is a flat diamond. Abdominal ribs are obvious, and the thorns from pectoral fin to anal dorsal fin are thick and slippery. Living in the upper and middle layers of water. Herbivores.

Seasonal flower fish belong to the bottom fish, like to live in the middle and lower layers of water, and migrate to the deep waters of rivers in winter to spend the winter. They feed on benthic organisms, mainly aquatic insects and mollusks, and also eat all kinds of small fish.

Island fish is also called white fish. Since ancient times, fishermen on the Songhua River have cooked white fish with river water to entertain guests, which is a beautiful talk. After cooking with great concentration, Jilin famous dish "Steamed White Fish" was born.