Fish culture method "common freshwater ornamental fish" to buy goldfish

Whether to be gregarious or not

Any fish that walks alone may get sick. No matter how good the color is, it is not suitable to choose. Can only be selected from the community? it is healthy to choose fish like fish that swim on the bottom of the pond while looking for bait.

Symmetrical head and tail

Some fish tails are uneven (crooked long tail # this kind of fish is also not suitable to buy. Longjing and Blister Eye are named after the characteristics of the eye, so if its eyeball is big and small, it is not up to standard. If you look closely, you will find that the eyeballs of many fish are not the same size. The ball of velvet fish must be symmetrical: when buying small fish hatched for 4 months, you should pay attention to the ball on your head # if you find that the ball is damaged # no matter how good the other side is, you can't have it # because the ball is damaged # it can't be reborn. The three-ring moon that looks at the sky is not good if it is not bright or golden.

Pure color

You should choose black, not black and gray; if it should be red, you can't have red, yellow or yellow. Some red fish have the worst color like carrots. Some fish are half-black and half-red or red and the edges of the fin leaves are black # it seems beautiful # in fact, the body color of this kind of fish will become all red soon # it should be foreseen.

Scale fin intact

After hatching, some fins and scales are easy to tear and fall off in the process of loading, unloading and handling. The dorsal fin and caudal fin of goldfish are easy to break and crack in the process of fishing out and in. The scales on both sides of the abdomen are also easy to rub off. Red and black fish # after falling scales # the fish body will reveal the gray color of the epidermis, which can be easily distinguished.

Caudal fin selection

All four-tailed species # should split between the caudal fin and the back of the fin # to form two double drooping four tails, which are extremely beautiful when swimming. There is no crack between the caudal fin and the back of the fin, and individual fish always like to float head up and tail down # float to the surface and spit # this phenomenon is called "floating head". I can't stand the slightest lack of oxygen in the water. It's hard to get through dog days. It shows that the resistance of this kind of fish is poor and its physique is poor.