Problem 2: green crabs to eat what is the most easy to grow fat I do not know that this is useful for you to r(s_t)q?
Underwater World
The marine animal sleeping posture Hundreds of states
Fish sleep time is very short, some minutes, some only a few seconds, people blink of an eye, for some fish, has slept.
Marine mammals sleep differently than fish. For example, a dolphin sleeps, mostly at night, floating about a foot underwater and settling down to sleep, while its tail still wags every 30 seconds or so.
When seals sleep underwater, they wake up every time they take a breath. This means that they are taking time out between breaths to sleep.
The sea otter, which is native to the North Pacific coast, makes a bed of seaweed on the beach, enclosing it in an oval shape, and sleeps with its body tucked in the center and its belly facing the sky. If it is satisfied with sleeping in a certain place, it will go to that place every day.
The walrus, which grows in the Arctic Ocean, sleeps even more differently. Instead of lying flat, it sleeps vertically in the water with its head above the surface.
The favorite beaver, generally in the daytime sleep, sleep with their heads tilted up, and sometimes grind their teeth. Especially the little beavers, sleep the most interesting, they sleep side by side, some also put the little paws pillow under the head, people can not help but laugh.
Fish special features
Fish eyes
The pair of eyes of fish is a typical myopic eyes, they have another eye - lateral line. A fish's lateral lines grow on scales called lateral scales on the side of the body, one on each side. The lateral line scales have small holes in them, which transmit information from the outside world through the sensory organs connected to them to the nerves in the brain, thus enabling the fish to see everything in the outside world.
Fish ears
People always think that fish do not have ears, in fact, the two ears of the fish did not grow outside the body, but in the skull, by small pieces of calcareous otoliths, lymphatic fluid and sensory cells. External sound caused by the lymphatic fluid vibration, *** otoliths and sensory cells, through the nervous system to the brain, the fish heard the sound. The fish's ears also serve to maintain body balance. When the body is not balanced, the lymphatic fluid and otoliths will compress the sensory cells and immediately report to the brain, so that the fish in time to maintain balance.
The Fish Nose
The fish nose is an important organ for orientation and foraging. When water enters the nasal sac through the front nostril and exits through the back nostril, the olfactory cells in the nasal sac send the captured information to the central nervous system for storage. Most fish are oriented by the nose's sensation and analysis of the scent of the water, thus completing the action of leaving and returning to the nest. Experiments have shown that many fish can swim from kilometers or even dozens of kilometers away back to the original occupied nest, relying on the sensitive nose.
Interesting crabs
Crabs are mostly transverse, and therefore are called "transverse intermediaries", which is unique among animal groups. The crab has five pairs of thoracic feet on both sides of the head and chest, except for the first pair of stinging feet, the other four pairs of footsteps. Since the joints of the feet can only be moved from side to side, the crab can only move sideways on one side of the feet, while the other side of the feet is on the ground. In addition, due to the same side of several pairs of footsteps long before and after the short, when encountering obstacles can only turn around and go through, often a hard along the obstacles to a direction to climb.
The intertidal zone and coastal mudflats are the main place where crabs live, usually dozens of species survive, in China's coastal mudflats are mainly fluffy near-square crabs, Chinese near-square crabs and beckoning crabs and so on. They all like to hide under the rocks or in the mud on the sandy beach digging burrows and living, their burrows are all over the mudflats, in the area of one square meter there are 2 to 3. The depth of the burrow varies, but generally each burrow often has two holes. The crabs hibernate at the bottom of their burrows in winter until spring, when they climb out again to breed. The crabs are fast-moving, with their daily peak of activity occurring at dusk, just after dark, when almost all of them come out of their burrows, spreading out in dense clusters along roads and rivers, making them a spectacular sight from afar. They have thin exoskeletons and large eyes, and are always alert and looking around to avoid prey as soon as possible. There is a kind of sand crab that lives above the *** line on open sandy shores. Its stinging foot is asymmetrical and there is a fine engraving on the stinging palm, which is called the sounding ridge. When it encounters danger, it will immediately burrow into its burrow with a speed of 1-1.6 meters per second and disappear without a trace. There is also a small sand crab, when frightened then ...... >>
Question 3: What kind of food do domesticated crabs eat? You can use pots to raise it, it doesn't matter if the water is deeper or shallower, it won't drown it. But it's best if the water is just soaked through the shell. You can let it bask in the sun, but not for too long. The water can be used tap water, but to sunbathe for a day before using.
Crabs are omnivorous.
You can feed them fish ah, whether raw or dried fish, they can accept. You may also feed them fish feed, red worms, shrimp, snails, mussels. It's best to feed them grasses regularly, bitterweed, ilex algae, etc. As long as the feeding is ok,you don't need to worry about the rest. Crabs are very good to keep.
Question 4: What bait is the easiest to fertilize for green crabs High protein and high fat feed. The best is fresh bait (small mixed fish).
In recent years, several domestic universities have been researching artificial feed for green crabs, but there are no ideal results.
Question 5: What do crabs usually eat? 5 points The crab is omnivorous, feeding on aquatic plants, benthic animals, organic debris and animal carcasses. When feeding, it relies on its chelipeds to catch and then deliver the food to its mouth. Its favorite food is snails. Prefers snails, small shrimps, mussels, small fish and pumpkins, boiled potatoes, rice crumbs, bread crumbs and so on. All these, soothe the body and the crab are harmless.
If wild, mainly eat some planktonic plants and animals, if you raise your own, feed it some water plants or dried fish worms and so on can be. Crabs like a sandy environment, don't forget to put more sand.
The crab likes dark place, he must hide in a dark corner, there is no way to lead him out by food, because the crab's olfactory organ is very poor, but the crab is very sensitive to the light, you can light a candle at night after turning off the light, and use the candlelight to lead him out, it is very effective.
Question 6: What kind of food do crabs eat how to raise Give it fish food a grain of the kind
Question 7: What kind of food do crabs eat Crabs are omnivores, feeding on aquatic plants, benthic animals, organic detritus, and animal carcasses.
Question 8: What do crabs eat Saltwater crabs eat fish and freshwater crabs eat rainbow worms and fish.
You can use pots to raise it, but the water can not be too deep, the best eyes out if you can show the water. But it's best if the water is just soaked through the shell. The water can be tap water, but you have to sunbathe it for a day before you use it.
If you have the conditions, make a small platform.
You can let it sunbathe, don't sunbathe too long on it.
Crabs are omnivorous.
If possible, feed live red nematodes or egg yolk. (Pay attention to the amount of feeding, eat within half an hour shall prevail, can not eat will make the water dirty).
You can also feed them fish, sea crabs can be fed chicken and duck offal or small fish and shrimp, whether raw or dried fish, they can accept.
You can also feed them twitch feed, red worms, shrimp, snails, mussels.
It's better to feed some grasses often, there are bitter grass, ilex algae and so on. As long as the feeding is OK,you don't need to worry about the rest. Crabs are very good to keep.
Question 9: Green crabs eat pork Green crabs, also known as saw-edge green crab, yellow crab, grimy crab, etc., for the pike crab family green crab crustacean, its meat is delicious, nutritious, and nourishing the effect of strengthening the body, especially the female crab to be pregnant, the body will produce a red or yellow paste, in southern China is called the "paste crab", there is a "sea ginseng", and the "sea ginseng", the "sea ginseng". "Sea ginseng" said, here we take a look at the green crab to eat what food it!
What food does the green crab eat
What food does the green crab eat?
The green crab's diet is very diverse, mainly animal food, food composition of mollusks and small crustaceans, stomach contents often appear in the bivalve shell edge, stranded part of the debris, the operculum of the gastropods, the remains of the conch axle, the remains of the limbs of square crabs, and cephalothorax armor fragments. It also often feeds on beach worms, and also eats small fish and shrimp, and sometimes fragments of plant stems and leaves are found in the stomach. Artificial culture of the green crab on the bait without strict choice, small fish, shrimp, small shellfish (blue clams, seeker clams, river corbicula, snails, etc.), soybean cake, peanut cake can be eaten, there are the same kind of killing each other's habits, often prey on soft-shell crabs just off the shell.
What kind of food does the green crab eat
Habitat of the green crab
The green crab is a beach-swimming crab, living in the intertidal mudflats or mud and sandy mudflats, and likes to stay in the mudflats puddles and rocky crevices and other places. During the day, they live in caves and forage around at night. Especially in the night of high tide seems more active, because of its eyes and tentacles sensitive, so the night activities freely. Summer activities are more frequent, low tide when the water is shallow, more lurking mud bottom to avoid heat, sometimes seen in groups of green crabs in the dry heat with the feet to support the body to leave the high temperature of the beach surface to cool. Winter activities are less, when the weather is cold in the low tide near the shallow dug hole for the winter, the depth of the hole size with the size of the individual and the tidal area of the deepening of the height of the *** area of the hole sometimes up to more than 1 meter.
What kind of food does the blue crab eat
Breeding habits of the blue crab
The breeding season of the blue crab is longer, but it varies from place to place, from late May to June and from late August to September is the breeding season, generally up to one year to reach sexual maturity, the general carapace width of 8 centimeters, body weight of 150 grams of female crabs will be able to mate. Before mating, female crabs first reproduce and shed their shells, and male crabs mate with them before their new shells are hardened, and the mating time lasts for 1 to 2 days. During the mating period, green crabs have no appetite and do not eat even if they are baited. After mating *** stored in the spermatophore of the female crab, surviving for several months. Female crabs are mostly spawned in wide water surface, clear water and slow flow, the amount of eggs is about 2 million grains, in the estuary life of female crabs to move to the sea to spawn. Hatched larvae with the tide to the near shore, and then in the intertidal zone, marshland foraging growth.