Choose healthy and colorful fish
If you choose any kind of goldfish, you should choose the one with broad body, complete chest, abdomen and caudal fin, and open and big tail. For fish without dorsal fin, the back should be smooth without incomplete dorsal fin or nodule. The color of fish should be red, white, blue and black. The color of the fish is harmonious and the pattern is meticulous. Only when there is blue can it be called five flowers. Some fish are half red and half black, or they are red with black fins on the edge. They are very beautiful now. In fact, they will become full red soon. We should have foresight.
In the selection of fish, the outstanding fish with unique characteristics, body shape or color should be recorded and cultured.
Choose healthy and disease-free fish
Generally speaking, swimming in the pool (basin) active, gregarious, plump body, chest and abdominal fins open, often rowing, no white spots, no white fluffy mucus on the body, tail and scale without blood, ulceration, not often floating on the water, not lying on the side, upside down, sink, stool black and bulky fish, there are fish looking for food, the above situation can be bold to buy.
Choose fish with obvious characteristics
All kinds of fish have the characteristics of this species: for example, shouxingtou, shitoutou, hedinghong, goose head and so on. They are all famous for having sarcomas in the head. Therefore, we should choose the most developed and broad sarcoma on the gill cover of the head. In addition, the fish with red sarcomas such as heding red and goose head red should be the top grade fish with red top square (the head color is dark when the fish is young). When selecting pearl scale fish, we should pay attention to two kinds of big tail and small tail, and the big tail is better. However, regardless of the tail or tail, the head should be pointed and small, and the Pearl scales should be thick and neat until the back.
However, the scales should not be erect. Otherwise, most of the scales are scaly, and the abdomen is swollen and round, and the tail is smooth. Blister or dragon eye, are named after the characteristics of the eye, so, to choose the bubble round and symmetrical, bubble soft and transparent. When selecting the dragon eye, one should choose the one with large and prominent eye plate like a chess piece.
