Question two: What are the fish in the ocean, how do they hunt for food? First of all, the ability of deep-sea fish to resist stress, deep-sea fish to adapt to the environment, the body's physiological functions have undergone great changes. These changes are reflected in the muscles and bones of deep sea fish. Due to the huge water pressure of the deep sea environment, the bones of the fish become very thin; and easy to bend; the muscle tissue becomes particularly flexible, and the fiber tissue becomes surprisingly fine. More interestingly, the fish skin tissue becomes just a very thin layer of membrane, which keeps the physiological tissues inside the fish full of water and maintains the balance of pressure inside and outside the body. This is the reason why deep-sea fish are not flattened under such enormous pressure conditions.
Secondly, in order to adapt to the dark environment of the deep sea, fish living in the depths of the ocean, but also in the extremely dim light to identify their own kind, looking for mates and foraging, which requires them to have a luminous instinct. Different fish, emit signs of different bright light; rely on these bright light, in the same fish can pass information to each other, and lure other fish as a sacrifice, or used to get rid of predators. Therefore, luminescence is one of the important means of survival of deep-sea fish.
Furthermore, the eyes of deep-sea fish have become very peculiar. The eyes of the general fish, most of the growth in the two sides of the head, but living in the deep sea after the □ fish, the eyes are long in the back of the head. When viewed from the front, the two large eye frames of the fish look like two light bulbs standing up. When viewed from above, the two eyes look like two large circles, occupying the "stronghold" part of the head. What's more interesting is that this fish eyes, can move up and down, its eyeball organization and a telescope almost, and can also freely adjust the focus. Peculiar eye structure, almost a **** the same physiological characteristics of deep-sea fish.
◆ The survival of deep-sea fish
In the depths of the sea, not only is there no light, the water is also very cold, and food is scarce, but there are still a lot of fish living there, they rely on what subsistence? It turns out that the fish in the deep sea are usually very small, as long as you eat a little food to survive. Some even eat only one meal in a few months. Deep-sea fish have strange shapes, for example, one deep-sea fish known as the underwater fisherman has a fishing rod on top of its forehead with a glowing lure hanging from it, and other fish swim over to try to eat it, but end up being swallowed into the underwater fisherman's stomach.
Question 3: What are the fish in the sea can be eaten Striped bass, mackerel, herring ,salmon ,sea bass ,croaker ,milkfish ,barracuda ,coelacanth ,mullet ,cod ,tuna ,sea carp ,halibut ,halibut ,odontocetes ,swordfish ,J-fish ,mackerel , North Atlantic cod ,salmon ,eel ,tilapia ,pangasius ,bonito ,herring roe ,jellyfish ,sea bass ,sea cucumber,abalone,anchovies,pomfret . Sardine, sailfish, dahlia tail? , big rip, red grapefruit, fine scale, green class, oil cone, fire point, chicken fish, cheap tip, red fish, head sea bass, golden Y, tooth point, fire point, mussel, big star sea bass, yellow liang cang, three knives .
Question 4: What is the smallest fish in the ocean? The smallest fish ever discovered is found in the waters of the Pacific Ocean . The scientific name is
Schindleriidae Schindleria Fish
Below is a picture of the short and stout Schindleria brevipinguis (fat baby fish)
Its shape is elongated and it looks like a small worm, they have no fins, no teeth and no scales. The body is unpigmented except for the eyes and is transparent all over. The female fish spawns when she is 2 to 4 weeks old, and the "fat baby fish" generally lives for about 2 months, and is known as the "world's smallest fish".
Question 5: What are the fish in the ocean? At present, there are 21,723 species of fish ***, of which about 12,000 species of marine fish. The total number of marine fish in China is 3187 species. The classification of these fishes is more commonly divided into three orders.
First, Cyclostomata is the most primitive fish, without upper and lower jaws, so it is also called jawless. The body surface *** without scales, the body is elongated eel-shaped, the skeleton is completely cartilaginous. No even fins, no shoulder girdle or girdle, notochord present throughout life, meta-vertebrae. With separate unpaired nostrils, gills formed from endoderm in a muscular capsule and opening outside the body.
The second is Chondrichihyes. The endoskeleton is fully osteogenic, but often reinforced by calcification, meta any true bony tissue: the body surface is covered with shield scales, spines or *** without scales. Brain-cranium without joints. Head with gill slits on each side, opening outside the body. Intestine short, with internal spiral flaps. Fatless. Males have a specialized copulatory apparatus on the inside of the ventral fin called the fin-foot. In vivo fertilization. Oviparous, ovoviviparous or viviparous, for the crooked tail, chondrichthyans are widely distributed in the ocean, but mainly in low latitude waters.
Third is the Osteichthyes. It is the advanced and now the most prosperous class of fish. The endoskeleton appears ossified, the head floating often ballasted with membranous bone, the skeleton has a bone seam. The body surface is covered with hard or bony scales, or *** without scales. There is one pair of external gill pores, the gill septa are reduced, the gill filaments are supported by double rows of gill strips, usually fat, the fins are much segmented, and there are no spiral flaps in the intestines. Some fish have dorsal and ventral ribs and solid otoliths. Fertilization is usually in vitro and there is no cloaca. There are about 18,000 known species of bony fishes worldwide.
The body types of marine fish can generally be divided into: ① torpedo type, this type of body type of fish inhabits the middle waters, the most adept at swimming, such as mackerel, mullet pike, tuna and so on. ②Arrow type. Similar to the torpedo type, but the body is more prolonged, the odd fins moved back, inhabiting the surface water, good at swimming, such as the dogfish, jawed needlefish, etc., ③ lateral flat type. Fish of this body type with increased height of the dorso-ventral axis and extreme flattening of the left and right sides can be subdivided into zebrafish-type, cartwheeler-type and turbot-type, inhabiting the near-bottom and bottom layers, respectively. ④Snake type. This type of fish has an elongated body with a few rounded cross-sections, and generally inhabits the benthic vegetation, such as eels and sea dragons. ⑤ Banded type. The body is highly prolonged as a lateral flat type, not good at swimming, such as banded fish, royal banded fish and so on. (6) Spherical type. The body of this type of fish is several spherical, and the caudal fin is generally undeveloped, such as the box, certain round-finned fish, etc. (7) Longitudinal flat type. This body shape of the fish dorsal-ventral axis height reduction, body flattening, such as various rays, cK, etc..
The fins of fish are the main organs of movement and balance. Pair called even fins, including pectoral fins, ventral fins; unpaired called odd fins, including dorsal fins, anal fins and caudal fins. The caudal fin is born in the tail of the fish, and has the role of steering and propulsion, and is generally divided into round tail (upper and lower lobes of equal size, such as mackerel, tuna, etc.), crooked tail (the upper lobe is more developed than the lower lobe, which helps to move upward, such as sharks), and orthodromous tail (the lower lobe is more developed than the upper lobe, which helps to move downward, such as flying fish).
Fish reproduce in 3 ways, oviparous, ovoviviparous, and viviparous. The vast majority of fish are oviparous. Ovoviviparous fish generally discharge their mature eggs directly into the water, undergo in vitro fertilization, and complete all of their development, but a few fish (e.g., some sharks) are in vivo fertilized, with the fertilized eggs still developing outside the body. Ovoviviparous fish are generally fertilized in vivo and the fertilized egg develops in vivo, but the embryo relies on its own yolk to supply nutrition and has no relationship with the mother, such as the white-spotted star shark, white-spotted horned shark, Japanese migratory shark, Xu Pressure Plowshare, sea crucian carp, and black (Fish Junk), and so on. Placental fish are generally eggs fertilized and developed in the mother's body, the embryonic body formed by the fertilized egg is connected with the mother in blood circulation, and its nutrition not only comes from the yolk of the body, but also needs to be supplied by the mother, such as grey starsharks and so on. Fish spawning is much higher than terrestrial vertebrates, the number of eggs due to different species vary greatly, such as from the production of a few large eggs (such as a variety of sharks) to produce 300 million floating eggs (such as the turntable fish). Generally speaking, the fish that do not protect the eggs after spawning, the amount of eggs is larger, such as the true seabream production of about 1 million particles, eel production of 7 to 15 million particles; after spawning to protect the eggs of the fish, the amount of eggs is smaller, such as seahorses spawning dozens of particles to hundreds of particles.
The growth rate and size of the individual fish at each stage are extremely different. Studies have shown that the smallest individual fish is the microshrimp goby, with a body length of only 7.5-11.5 millimeters; the largest can reach 20 meters, such as the whale shark. The most rapid period of fish growth is usually before sexual maturity, after which most of the bait ingested by fish is used for maturation of sex products and reserve fat, with only a small portion used for length ...... >>
Question 6: What fish in the ocean are not edible In terms of eating fish poisoning today, it can be broadly categorized into seven categories.
First, meat poisonous fish
The so-called "meat poisonous fish", that is, its flesh is poisonous, never eat, as early as the sixteenth century has been reported. These poisonous fish, their muscles and viscera contain "ciguatera" toxin, after eating will cause poisoning, called "poisonous fish poisoning".
Botulized fish are widely distributed in the Pacific Ocean, Indian Ocean, Atlantic tropical and subtropical waters, many species, different habits. Some live in the vicinity of coral reefs, some in the offshore bottom, and some swim in the upper layers of the ocean.
According to preliminary statistics, belonging to more than 300 species of carnivorous fish, China also has 30 species, mainly distributed in Guangdong and Hainan coast, a few species are also seen in the southern East China Sea and Taiwan Province of China.
The appearance of carnivorous fishes is not much different from that of common edible fishes. Moreover, most of the species of some families and genera are edible fish, and a few of them are poisonous, so it is very difficult to distinguish them from each other and easy to be poisoned by mistake. The reason for poisonous fish is very complex, some fish in a certain area is not poisonous, for food fish, but to another area is poisonous, can not eat; There are also species, usually not poisonous, but to the reproductive season is poisonous.
After eating the carnivorous fish, generally in 1 ~ 6 hours after eating symptoms, first lips, tongue, throat tingling, followed by paralysis. In some cases, nausea, vomiting, dry mouth, metallic taste in the mouth, spasmodic abdominal pain, diarrhea and other symptoms, followed by stiffness of the mouth, cheek and jaw muscles. Systemic symptoms include headache, anxiety, arthralgia, nervousness, dizziness, insomnia, pallor, chills, fever, sweating, rapid and weak pulse, muscle pain, and inability to walk. Especially wrists and feet feel extreme pain, blurred vision, dilated pupils. Itchy skin, erythema, water sores, large areas of peeling hands and feet, or even ulcers, hair and nails fall off. Severe poisoning, limb sensory abnormality, appear hot and cold inversion (cold feeling for burning, warm feeling for cold), and then appear generalized muscle dyskinesia, spasmodic, convulsions, dysarthria, coma, until the respiratory paralysis and death. At present, there is no specific drug can be cured. Its species are:
Yellow-bordered bare-breasted eel (moray eel family), the shape of the body such as eels, but much fatter, body length of 1.5 meters. Yellow-brown, covered with dark brown spots. For warm-water large fish, distributed in Taiwan and Hainan Province, common in the coral reefs, is a carnivorous ferocious fish, to fish, shrimp for food. The meat is poisonous and highly toxic. It is a representative of carnivorous fish, and there have been reports of accidental poisoning in Taiwan Province.
And it is the same family of spotted naked chest eel. Widespread in Guangdong, Hainan and Taiwan coast. There have been instances of only 200 grams of fish and death, poisoning symptoms are intense, spasms, paralysis is significant, high mortality, in Taiwan Province, there are also reports of poisoning by accidental ingestion of this fish.
Distributed in the coast of Hainan Province, there are also spotted bare-breasted eel (moray eel family), and distributed in Guangdong, Hainan and Taiwan coast of the rippled bare-breasted eel (moray eel family), commonly known as "sea eel". There have been reports of poisoning by accidental ingestion in Taiwan Province.
Tuna longlining can catch, produced in Taiwan and Hainan Province off the coast of carnivorous large sturgeon - big sturgeon (Acipenseridae), body length 1.8 meters, like clusters, preferring to catch the sea eel. 8 meters, like clusters, gluttony, easy to catch. Its meat is toxic, especially in May to September reproductive period more toxic. Generally eating 30 minutes to 2 hours onset. The face around the mouth is paralyzed, the limbs and the whole body have electric shock-like numbness, and drunkenness. In severe cases, there is salivation, difficulty in swallowing, slurred speech, difficulty in standing up and walking. But generally 1-2 days will be self-healing, the serious cases need a few days to recover, in Taiwan Province of the accidental ingestion of this fish poisoning reports.
The spotted nine-spined perch of the same family as the perch (Lipidae). Body oval, slightly extended, laterally compressed, dorsal, ventral rounded blunt, body black-brown, dorsal fin has nine spines, so the name. Produced in China's Hainan Province coast, body length of 50 centimeters meat poisonous. The milder symptoms are vomiting, dysentery, numbness of the tongue and mouth, blisters, shivering and pain in the hands and feet.
The same family has brown spotted grouper, body brown, with black spots, distributed in Hainan within 60 meters of the shallow bottom of the carnivorous fish, body length up to 1. 2 meters, the meat is toxic, toxicity is slight. Belonging to the family of Kurojiri (family), commonly known as the yellow tail, body blue-green or brown, light white abdomen, caudal fin light ...... >>
Question 7: How many species of fish are there in the sea and what are they called? There are 21,723 species of fish***, of which there are about 12,000 species of marine fish. The total number of marine fishes in China is 3187. The classification of these fishes is more commonly divided into three orders. One is Cyclostomata, the most primitive fish, without upper and lower jaws, so it is also called jawless. The body is *** scale-free, elongated and eel-shaped, and the skeleton is entirely cartilaginous. No even fins, no shoulder girdle or girdle, notochord present throughout life, meta-vertebrae. With separate unpaired nostrils, the gills formed by the endoderm are in a muscular capsule and open outside the body. The second is the Chondrichihyes. Endoskeleton fully osteogenic, but often reinforced by calcification, meta any true bony tissue: body surface covered with shield scales, spines, or *** without scales. Brain-cranium without joints. Head with gill slits on each side, opening outside the body. Intestine short, with internal spiral flaps. Fatless. Males have a specialized copulatory apparatus on the inside of the ventral fin called the fin-foot. In vivo fertilization. Oviparous, ovoviviparous or viviparous, with a crooked tail. Chondrichthyans are widely distributed in the oceans, but predominantly in low-latitude waters. The third is the Osteichthyes. It is the most advanced and prosperous class of fishes. The endoskeleton appears ossified, and the head is often ballasted with membranous bones, and the skeleton has bony seams. The body surface is covered with hard or bony scales, or *** without scales. There is one pair of external gill pores, the gill septa are reduced, the gill filaments are supported by double rows of gill strips, usually fat, the fins are much segmented, and there are no spiral flaps in the intestines. Some fish have dorsal and ventral ribs and solid otoliths. Fertilization is usually in vitro and there is no cloaca. About 18,000 species of scleractinian fishes are known worldwide.
Question 8: What kind of fish are there in the sea Sharks, banded fish, grouper, yellowtail, cuttlefish, lantern fish, flounder, clownfish, swallowfish, bushelfish, lionfish, and so on.