Where is the heart of a fish and does a fish have a heart?

Yes.

The fish has a heart, next to the gills, attached to the neck of the fish, in the abdominal cavity closest to the pectoral fins. But fish are the lowest, with only two chambers, one atrium and one ventricle, which play the role of squeezing to promote blood circulation. Fish-specific organs include gills, fins, scales, and swim bladders, where gills help them breathe in the water, fins provide power and balance, scales protect themselves, and swim bladders make it easy to float and sink.

Fish are mainly divided into freshwater fish and marine fish, but they all have the characteristics of delicate and delicious meat, rich in nutrients, and are good for some vitamins and minerals. Fish has the effects of strengthening the brain, strengthening the spleen and stomach, and lowering blood pressure. Lowers blood pressure:

Fish protein is rich in methionine and taurine.

The heart of the fish grows inFish gillsRear.

The heart of fish is located anterior to the abdominal cavity and in the pericardiac cavity below the gill arch. The heart of fish is relatively low, with only 2 chambers, an atria and a ventricle, but the effect is almost the same, both are squeezed to promote blood circulation.

Unique organs of fish

1. Gills

Unlike open-field animals, fish live mostly in the water throughout their lives, so they must get oxygen from the water, which is dependent on their gills. Fish can swallow water from their mouths and drain it from their gills, where the blood vessels in the gill filaments complete the gas exchange.

2. Fins

For fish, fins are as important as limbs are to humans, and with them, fish can swim better in the water. The caudal fin is responsible for power, the pectoral fin and pelvic fin are responsible for maintaining balance so that the fish can swim faster, and their special body shape also helps swimming.

3. Fish scales

Most fish have a layer of scales on their body surface, which can play a protective role in reducing the invasion of germs and other bacteria, and the special structure can also reduce the resistance to swim, so that they can swim faster.

4. Fish bladder

The swim bladder is the majority of bony fish.

It stores and releases gases that allow fish to float and dive in the water. In addition, for some fish, the swim bladder can also play a role in aiding breathing.

In the thoracic cavity, which is the anterior part of the abdominal cavity, close to the lower part of the back.

Cut the belly of the fish open, and there is a diaphragm near the head of the fish, and the heart of the fish can be seen by tearing it open.

The fish heart is located on the ventral surface of the digestive tract.

in the throat of the fish. You can find a larger fish, disembowel it, and then use your fingers to reach through the mouth to the throat of the fish, and slowly pull out its organs. One of them that moves is its heart.

in the throat of the fish. You can kill a live fish, disembowel, slowly probe the throat of the fish with the middle finger of your hand, and then slowly pull it back! The heart of the fish and other organs come out!

The beating is the heart of the fish you want! The location is in the abdominal cavity closest to the pectoral fin.

Fish have hearts. Fish are the oldest vertebrates.

Vertebrates all have hearts, but fish are the lowest, with only one atrium and one ventricle, which plays the role of squeezing to promote blood circulation. The heart of the fish is next to the gills and is attached to the neck of the fish, and each fish has only one heart. The heart of a fish has only 2 chambers, 1 atria and 1 ventricle.

Mammalia. The heart has 4 chambers, 2 atria and 2 ventricles, and the bird heart also has 4 chambers. You can kill a live fish, and after disemboweling, slowly probe the throat of the fish with the middle finger of the hand, and then slowly pull it back, and the fish's heart and other organs will come out, and the position is in the abdominal cavity closest to the pectoral fin.

Types of fish. 1. Bighead carp.

The adaptability is very strong, widely distributed in China's east and west, north and south, whether warm south, or cold north, rivers, lakes and reservoirs are the areas where they are active, like warm water, filter feed plankton.

And plants, which are filter-feeding fish, are one of the economic fish species in our country and are also delicious on the public table.

2. Herring. It can be seen in all major water systems in China, and it is widely distributed, and likes to forage in the underwater layer and eat shellfish.

Insects, mollusks.

He also likes to eat grain-based foods. It likes warm and cold water, and is mostly found in the vast plains and rivers south of the Yangtze River, and many lakes and reservoirs have also begun to be cultivated in large quantities.