What kind of seahorse belongs to?

What kind of seahorse belongs to? Many people have heard of it, or seen it, but many people never know it, especially people in areas near the sea, and there are even fewer opportunities to see it. The following is what kind of hippocampus belongs to.

What kind of seahorse belongs to? 1 Hippocampus.

In natural waters, seahorses usually like to live in the slow current of coral reefs. Because they are not good at swimming, they often outline coral branches and seaweed leaves tightly with tails suitable for grasping to fix their bodies so as not to be washed away by rapids.

Most species of seahorses grow at the junction of estuaries and the sea, so they can adapt to different concentrations of seawater and even survive in fresh water. Seahorses and seahorses have small mouths, which are only suitable for eating live bait, while those who are not good at swimming cannot prey quickly.

Extended data plunder

In fish, the hippocampus has a unique curved neck, which looks like a horse with a long nose and mouth. The overall shape of seahorses, coupled with the absence of caudal fins, makes them the slowest swimming animals on earth. They can't swim fast, usually like seaweed, tied to the bottom of the sea with curly tails.

Because all marine life likes to eat copepods, they are extremely sensitive to the fluctuation of water flow pattern caused by the approach of carnivores. Once copepods sense that the enemy is approaching, they can swim 500 times their own length every second. In contrast, the cheetah, which is famous for its running speed, travels at a speed of only 30 times its length per second.

1. Hippocampus is a strange small marine fish.

2. The hippocampus is 5 cm to 30 cm long. Named after the head bends at right angles to the body. There are not many species of hippocampus, about 32 species, 8 species in China. They live in tropical and subtropical coastal shallow waters between 30 degrees north latitude and 30 degrees south latitude respectively. Although they have a wide geographical range, they are only scattered and narrow in coastal waters, and most species are mainly distributed in the western Atlantic Ocean and the Central and South Pacific Ocean.

3. The shape of hippocampus is different from that of common fish. The caudal fin is completely degenerated, and the spine has evolved into a monkey's tail, which can be curled to hook any protruding object to fix the body position. Small and almost transparent fins can make the hippocampus move up and down, left and right at will, but the speed is slow.

Usually, the hippocampus relies on its body color camouflage to harden into skin-like skin to avoid predators. The special breeding mode of hippocampus is also remarkable. The female fish lays eggs in the male fish's pouch, and after two to three weeks of pregnancy, the male fish hatches a small hippocampus.

What kind of seahorse belongs to? Hippocampus belongs to fish animals. Hippocampus, a small marine animal, is the collective name of several small warm marine fishes of the family Syngnathidae, with a body length of 5-30 cm. Named after the head bends at right angles to the body, the head is horsehead-shaped, at an angle to the body shape, with a long tubular snout, a small mouth and dorsal fins, all of which are composed of fins.

The eyes can move independently. Hippocampus moves slowly, but it can effectively capture fast-moving and hidden copepods, which are distributed in the Atlantic Ocean, Europe, Pacific Ocean and Australia.

morphological character

The head of the hippocampus is flat, with two nostrils on each side of the head. The head is bent at right angles to the body, and the fish is thick and flat, completely enclosed in the bone ring. The tip of the mouth is tubular, so it can't be opened and closed. It can only suck small animals in the water as food, and its eyes can rotate up and down, left and right, back and forth respectively. The chest and abdomen are prominent, and the trunk is composed of 10 ~ 12 bone ring, with a general body length of about 15 ~ 30 cm.

The tail is slender and has four corners, and the tail tip can be curled and often curled; The head is bent, forming a large obtuse angle or right angle with the trunk, with a prominent crown at the top and a short tip at the crown end; Kiss is tubular; Small mouth, end position;

Small branchial foramen; The whole body is completely wrapped by membranous bone, the dorsal fin is spineless, and there are no ventral fins and caudal fins. Dorsal fin is located between trunk and tail; Short gluteal fin; Thoracic fin developed; No caudal fin; Its fins are not easy to see with the naked eye.

But with high-speed photography and careful observation, you can see moving thorns. These spines can move back and forth 70 times in one second. According to the wave from one end of the dorsal fin to the other, the hippocampus can ride this wave freely back and forth or up and down. The male fish has a pouch on the ventral side of the tail, in which the eggs hatch and can reproduce for 2-3 generations a year.

habitat

In natural waters, seahorses usually like to live in the slow current of coral reefs. Because they are not good at swimming, they often outline coral branches and seaweed leaves tightly with tails suitable for grasping to fix their bodies so as not to be washed away by rapids.

Most species of seahorses grow at the junction of estuaries and the sea, so they can adapt to different concentrations of seawater and even survive in fresh water. Seahorses and seahorses have small mouths, which are only suitable for eating live bait, while those who are not good at swimming cannot prey quickly.

What kind of seahorse belongs to? 3 living habits

activity

Because of its mimicry adaptability, hippocampus has a special habit, and it likes to live in the subtidal waters where algae or seaweed breed. Sex is lazy, often winding its curly tail around the stems and branches of seaweed, and sometimes hanging upside down on floating seaweed or other objects, drifting with the tide. Even if you temporarily leave the entanglement because of eating or other reasons, after swimming for a certain distance, you find other objects attached to it.

The swimming posture of hippocampus is very beautiful. The fish stands upright in the water, relying entirely on the dorsal fin and pectoral fin to fluctuate at high frequency (10 times per second) and swim slowly (only 1 ~ 3 meters per minute). The activity of hippocampus is usually in the daytime (morning and afternoon), but it is still at night.

When the water quality deteriorates, the oxygen is insufficient, or the seahorse is attacked by the enemy, it often gurgles due to the contraction of the pharyngeal muscle, and sends a signal of "calling for help" to farmers, but it also makes a sound when eating bait on the water surface, which should be distinguished.

However, the hippocampus can use the special shape of the head to quietly approach the prey and then capture it. The probability of success is over 90%. The mouth of the hippocampus is located at the end of the long nose. When moving towards the prey, the waterline near the snout hardly moves, so it can sneak up on each other and successfully hunt.

Eating habits

The hippocampus swallows food through the extension of gill cover and kiss, and the size of the bait does not exceed the diameter of the kiss. It has certain selectivity to the kind and freshness of bait. The feeding sight distance of hippocampus is only about 1 m, so the bait should be placed in the place where it often gathers.

Hippocampus in natural sea area mainly feeds on small crustaceans, including barnacle larvae and tendrils of copepods, larvae and adults of shrimps, fireflies, mysids and hooked shrimps. Under the condition of artificial feeding, the effect of feeding mysis and sakura shrimp is the best, followed by Boda and Acropoda. Freshwater cladocera can also be eaten, but attention should be paid to avoid rapid death in seawater and pollution of water quality.

The food intake of hippocampus is closely related to water temperature and water quality. In a suitable temperature range, the higher the water temperature, the greater the food intake and the faster the digestion. When the water quality is poor, the food intake decreases or even stops. Under normal circumstances, the daily food intake of hippocampus accounts for about 10% of body weight. Hippocampus has a large one-time food intake and strong hunger tolerance, and the hunger tolerance time from newborn to adult fish can reach 4 ~ 132 days.

Exercise method

The structure and function of hippocampus tail are very different from other fish. At rest, the hippocampus uses the curling ability of its tail to wrap it around the stems and branches of seaweed. Therefore, most seahorses inhabit deep-sea algae. Swimming posture is also very special. Head up, body slightly tilted upright in the water, completely relying on dorsal fin and pectoral fin movement. The fan-shaped dorsal fin plays the role of wave propulsion.

What kind of seahorse belongs to? 4 Hippocampus is mainly divided into three types:

1, three-spotted hippocampus, also known as spotted hippocampus, fur seal (commonly known as). This kind of hippocampus has its own unique characteristics, and the main differences from previous species are: short body, long body length, protruding abdomen and sharp lower abdomen edge.

The eyes are small and round, with well-developed supraocular spines, small and bent backwards. There is a raised ridge at the back of the neck. Under the cheek, there is a thin and curved infrabuccal spine. Dorsal fin 202 1. The body is dark brown. There are radial brown markings on the eyes. There is a black circular spot at the base of mucro in 1, 4 and 7 on the body side and back side, hence the name of the three-spot hippocampus. Habitat in the low tide area with clear water quality and lush algae in the offshore inner bay, with algae wrapped around its tail, and its body color often changes with the environment.

I like to eat live bait and suck plankton crustaceans with my mouth. Hippocampus is a precious Chinese herbal medicine. Under the condition of culture, it can also grow and develop in brackish fresh water, and the suitable water temperature is 65438 08℃ 30℃. If it exceeds 32℃ or is lower than 8℃, it will lead to death.

In estrus in May, when mating, the female fish will lay eggs in the male fish's pouch, and the eggs will be fertilized and hatched in the pouch. Small seahorses will be produced after 1520 days, and each fetus can produce tails, sometimes as many as 1200. If enough bait is fed, the commercial specifications of medicinal materials can be reached after half a year of cultivation. This variety has many litters and fast growth, and is an excellent variety for artificial propagation. China is distributed in the East China Sea and the South China Sea. Artificial farming has been carried out in coastal areas of Zhejiang, Fujian and Guangdong.

2. Hippocampus is common and of good quality. This kind of hippocampus is characterized by its length. The body spine and the head spine are sharp and particularly developed; The crown is not high, and it has 45 small sharp points.

The length of the kiss is greater than or equal to the back of the eye. Small eyes, sideways, higher. Somatoskeletal ring 1 1, tail 3536. The body is light yellow, with a row of spots near the tips of dorsal fin, light gluteal fin and pectoral fin, and the tip of mucro on the body is dark brown. Ecology, distribution of collinear hippocampus.

3. Hippocampus is a kind of nourishing hippocampus, which is more common in Fujian and other places. Its characteristics are: body length. Mucro's head is developed, and his thorns are short, blunt and thick; The crown of the tree is low, with five short and blunt thorns at the top.

The length of the kiss is equal to the length of the back of the eye. The gill cover is prominent and has radial ridges. The spinous processes on the head, eyes and cheeks are even, thick and strong. The body is yellowish brown, with small black spots on the side of the head and scattered in small silver spots. The dorsal fin has black longitudinal stripes.

The gluteal fin and pectoral fin are pale. Distributed in coastal areas of Guangdong and Hainan Island. In addition, there are the following animals used as hippocampus drugs: ① crested hippocampus is distributed in Bohai Sea, China, with few species; ② Japanese hippocampus H, also known as Little Hippocampus (China People's Pharmacopoeia), is distributed along the coast of China.