How to tell the sex of a fish?

All kinds of fish have different gender discrimination.

Let me give you a few examples:

Anthuridae

Giant salamander is a tropical fish. It is best to distinguish between male and female fish. The main way to distinguish is to look at the gluteal fin. Pointed fish is a male fish, and fan fish is a female fish.

Representative species:

(1) guppies (2) swordfish (3) marine fish.

Lipid cyprinidae

There are many kinds of fishes in CYPRINIDAE, and there are different ways to distinguish males from females, but generally speaking, males are brighter in color and smaller in size than females, and the abdomen of females is more swollen when they are sexually mature.

On behalf of fish:

(1) Neon light (traffic light): The male fish's anal fin is pointed, dark in color and thin; 3) The female fish's anal fin is fan-shaped, light in color and stout.

⑵ Lotus lantern: The male fish is slender and the female fish is stout.

⑶ Nine fish: It is difficult to distinguish, mainly because the abdomen of the female fish is swollen when she is sexually mature.

(4) Black pencil: it is difficult to distinguish, mainly because the abdomen of the female fish is swollen when it is sexually mature.

5. Black-bellied fish: The male fish is slender, with black dorsal fin and anal fin, sharp and long fin tip and black fish body color. Female fish is stout, with lighter dorsal fin and gluteal fin, short and round end of gluteal fin, light body color and swollen abdomen.

[6] Carnivorous pomfret: It is difficult to distinguish, mainly because the male fish is slender and dark in color, while the female fish is light in color, stout in body and swollen in abdomen.

cyprinidae

There are many kinds of CYPRINIDAE fish, and the methods of male and female identification are also different. But generally speaking, male fish are brighter in color and smaller in size than female fish. When the female fish is sexually mature, the abdomen is more swollen.

On behalf of fish:

(1) Tiger skin fish: it is difficult to distinguish. The only way to distinguish is that the edge of the dorsal fin of the male fish is dark red, while the female fish is lighter in color and the abdomen is swollen.

⑵ Zebrafish: The white and blue stripes of male fish are yellowish with lemon stripes at intervals, while the white and blue stripes of female fish are bright blue with gray and silver stripes at intervals, which is stronger than that of male fish and has shorter fins.

⑶ Silver shark: It is difficult to distinguish, mainly because the abdomen of the female fish is swollen when it is sexually mature.

(4) Goldfish: It's hard to tell. The male fish is brightly colored and the female fish is stout. The most reliable method is that when a male fish chases a female fish, it can distinguish between male and female.

Carpidae

Lycopodiaceae has the most species and the most distinguishing ways. The basic way to distinguish them is that the male fish is bigger and brighter than the female fish. Individual male fish heads are swollen and female fish heads are flat. The fin of male fish is longer than that of female fish.

On behalf of fish:

⑴ Fierce fish: Careful observation shows that the dorsal fin of male fish is sharp and long, while that of female fish is round and short.

⑵ Gemstone fish: Careful observation shows that the dorsal fin of male fish is sharp and long, while that of female fish is round and short.

⑶ Phoenix fish: After careful observation, the dorsal fin of male fish is sharp and long, while that of female fish is round and short.

⑷ angelfish: The male fish has a large body, a protruding head and long fins, while the female fish has a flat head and short fins.

5] Figure fish: The male fish has more patches and stripes, while the female fish has less, and the color is lighter than that of the male fish.

[6] Pineapple fish: The male fish has golden red spots, the female fish is less, and the color is lighter than the male fish, and the male fish is bigger than the female fish.

Percidae

There are many kinds of fish, the main difference is that the male fish is brighter in color than the female fish, bigger in size than the female fish, and each fin is long.

On behalf of fish:

(1) Pearl fish (2) Thai fighting fish (3) kiss fish (4) blue star fish.

Catfish family

There are many kinds of catfish, so it is very difficult to distinguish between male and female. When the female and the male fish are sexually mature, the abdomen is relatively swollen.

Representative fish

(1) Three mice (2) Tiger sharks (3) Scavengers

Ancient fish:

There are many kinds of ancient fish, so it is difficult to distinguish between males and females. When the female and the male fish are sexually mature, the abdomen is relatively swollen.

On behalf of fish:

(1) Elephant trunk fish (2) Seven-star knife (3) Nigger fish (4) Arowana: The difference between Arowana is not difficult, mainly because the ventral fin of male fish is long and the female fish is short. When the female fish is sexually mature, her abdomen will swell.

Shoot water fish

There are many kinds of sagittaceae, so it is difficult to distinguish between male and female. When the main females are sexually mature, their bellies are relatively swollen.

On behalf of fish:

(1) Shooting water fish