Small fish seahorse rag-picker. A small fish - a seahorse-rag-picker lives at a shallow depth. How seahorses breed

small fish - seahorse rag-picker lives at shallow depths aquatic plants, in shape and color it resembles algae. Name the type of its protective device against enemies, explain its meaning and relative nature. 1) the similarity of the animal with the motionless natural object- a plant is called patronizing resemblance(imitation); 2) a seahorse hangs among aquatic plants and is invisible to predators; 3) when the fish moves or in open space, it becomes accessible and noticeable to enemies.

Dimensions: 720 x 540 pixels, format: .jpg. To download a slide for free to use in a lesson, right-click on the image and click "Save Image As...". You can download the entire presentation "USE in Biology Part C.pptx" in a zip-archive of 2923 KB.

"Unified State Examination in Biology" - Features conducting the exam in 2010 Answers: Heterozygote, homozygote and how many types of gametes give. Analyze and evaluate. Disadvantages. The main provisions of biological theories, laws. Choosing an answer at random Inattention when performing tasks. At the end of 2009, 961 graduates took biology courses.

"Forest as a natural community" - Plants with soft green stems. Perennial plants with large hard stems. Scientists call the floors of the forest LAYERS and arrange them in decreasing order. Let's select the floors of the forest. Protect the environment! Forest life. Perennial plants that have several hard stems extending from a common root. The world around us 4th grade.

"Evolutionary process" - Divergence - (divergence of features in related forms). The emergence of similar organs (butterfly wing and bird wing). Regularities of the evolutionary process. Flippers. Medvedka (insect). Convergence. Cactus spines. 2. Development of similar living conditions by representatives of different systematic groups.

"USE in biology 2011" - Factor of evolution. Pancreas. Action. cytoplasmic membrane. Muskrat. Parts of work. Number of nucleotides. Pithecanthropus. flowers. Exams. Central American Center of Origin cultivated plants. Heterotrophic nutrition. Koala. One correct answer. Number of participants.

To the question What does a RAG-PICKER look like? given by the author IOSHAN the best answer is Ribbon-like leathery outgrowths on its body resemble either leaves or feathers and help it to remain unnoticed by predators in thickets of algae. His Latin name Phyllopteryx is composed of two words: phyllon - leaf and pteryx - feather, wing. Literally, leaflet.
He earned his name with an unusual appearance: outgrowths in the form of ribbons, patches and some incomprehensible “scraps” depart from the body, head, fins, and all this trembles and sways to the beat of the waves. The color of the seahorse, of course, is indistinguishable from the color of Sargasso algae.
a horse - a rag-picker - and without hide and seek in algae will be saved. It looks like it's all torn, tattered. If he swims, it is not difficult to mistake him for a rag or a piece of seaweed. Rag-pickers are most diverse off the coast of Australia.
Skates do not swim like a fish, but glide gracefully, holding their heads and upper part body vertically. How does a horse move itself? Turns out, dorsal fin, which quickly sways from side to side, like a fan. Skates swim slowly, therefore they do not run away from enemies, but hide, disguising themselves among algae and changing their color depending on the natural background. And the rag-picker was originally made up of numerous long spikes and ribbon-like outgrowths and outwardly looks like a branch of Sargasso algae, in the thickets of which he lives.
When for seahorses there comes a time mating games, they are singing" . The sounds of mating duets are reminiscent of snapping fingers. So the male invites the female to lay eggs in his brood pouch, which is located on his belly and opens outward with a small hole. After the eggs are laid, all worries about bearing offspring fall entirely on the shoulders of the male skate. The number of embryos hatched by one pipit is small - from 20 to 200, however, the offspring born in the pouch to the stage of a viable larva have many chances to survive.
Like the seahorse, the leaf dragon gets its name from its resemblance to another (albeit fabulous) creature. Its size, of course, does not reach a real dragon, but compared to a seahorse, it is a real giant, it grows up to 45 cm. Plankton, algae, and floating debris serve as food for a leafy dragon.
Unlike seahorses, male sea dragons do not have a brood pouch. Like their close relatives, female dragons lay up to 120 ruby-red eggs, which are then fertilized and attached in a special place under the tail of the male. During pregnancy, couples approach each other every morning and have a kind of love dance with a change in skin color towards brighter shades. 4-8 weeks pass, and the birth of small dragons occurs ( exact copies adults).
Leaf dragons are in danger of extinction due to industrial emissions, as well as becoming specimens of collections fascinated by them. appearance divers. In connection with this danger, the species is taken under the protection of the Australian government.
Lesser known herbal sea ​​Dragon(Phyllopteryx taeniolatus) is similar to its leafy cousin, but the yellow and red shoots of its body are unsightly and resemble weeds - hence the name. They are mainly found in Australian waters off the coast of New South Wales and Victoria.

Rag-picker (lat. Rhycoredurus eques) - ray-finned sea ​​fish from the needle family (lat. Syngnathidae). The presence of many leaf-like growths gives it a very original look, making it look more like a plant than a fish.

It is also called the rag-picker seahorse, although zoologists have identified this miracle Yudo in a separate genus Rhycodurus, which is translated from Greek means "like seaweed tail".

Spreading

Rag-pickers live in cold sea ​​waters on the south coast of western and southern Australia. Their range extends sporadically from the surrounding area Australian city perth before national park Wilson's Promontory on the peninsula of the same name in Victoria.

Fish settle at depths from 3 to 30 m on the border of sandy beaches and coral reefs. Unlike seahorses, they do not attach themselves to plants, so they are often washed ashore during a storm. From this point of view sand beach much better than coastal rocks.

Behavior

The color of the fish depends entirely on the conditions. environment. In shallow water, they are painted in sandy or olive color. The rag-pickers living on great depths, predominantly dark brown or brownish red. The body length of adults reaches 35 cm. It is extremely rare to come across specimens that have managed to grow up to 50 cm.

The rag-pickers feed on small crustaceans, with a particular focus on shrimp and mysids. They swim very slowly with the help of small translucent fins. Their tail is motionless.

In an hour, these sea slugs move only 100-140 m.

Despite their inactivity, they are almost invisible among underwater vegetation, so they rarely get to dinner with predators.

The rag-picker has no teeth, it swallows its prey whole. During the day, the fish eats up to 3 thousand mysids. He likes to eat protein foods with marine herbaceous plants from the genus Posidonia.

reproduction

Spawning takes place in winter. To continue the family, rag-pickers gather in shallow bays. At this time, females can be easily distinguished from males by their large swollen bellies.

The female lays 250 to 300 eggs, which are attached to the tail of the male.

The eggs are 7 mm long and about 4 mm in diameter. The tail of the new parent acquires a yellowish tint. Happy and proud fathers slowly go into deep waters to devote themselves to the pleasant chores of raising offspring.

Young fish hatch from eggs after about 8 weeks for 6-7 days. Their size does not exceed 3.5 cm. During their first 3-6 hours of life, they remain close to their father. After listening to the father's parting words, the young rag-pickers set off on their own to shallow water.

The view is taken under state protection. Rag-pickers in Australia are bred in aquariums and sold for export. In captivity at good care they live up to 10 years.

body length rag-picker can reach 35 cm.

Habitat rag-pickers: Indian Ocean.

Appearance
seahorse rag-picker- very unusual fish, whose entire body is covered with processes. These processes look like algae and serve as an excellent means of camouflage. The considered representatives of the needle move very slowly with the help of almost transparent fins, so it seems that they seem to be floating in the water column. This ability allows them to remain invisible in the thickets of algae.
Habitat and food
inhabit rag-pickers mainly on coral reefs and shallow water, in dense thickets of algae coastal waters Tasmania and Australia. An interesting fact is that these fish spend their whole lives in the place of their birth. They feed mainly on algae, small crustaceans and plankton, while they themselves contain practically no nutrients, and are of no interest to more big fish, the only exceptions are stingrays. These are currently interesting creatures are under the protection of the Australian government, because. due to industrial pollution natural environment habitation, their population is rapidly declining. It should be noted that the Australians have always been in awe of these creatures, so rag-picker seahorse is the emblem of one of the states of Australia and even adorns one of the coins.
Reproduction and lifespan
Female rag-picker lays about 120 eggs, which, after fertilization, are attached to the tail of the male. Every morning, throughout the entire period from laying eggs to the appearance of babies, lovers arrange in front of each other mating dances, while the color of their bodies becomes brighter and more saturated. After birth, babies immediately become independent, which is why their survival rate is no more than 5 percent. The life expectancy of these fish is on average about 5 years.

Some animals are so carried away by disguise that they become completely different from representatives of their class. For example, Sea Horses they bear little resemblance to fish, and some of them are even difficult to mistake for animals. In this article we will talk about the master of mimicry - the rag-picker seahorse. Photo and Interesting Facts you will find about it below. We will also tell interesting facts from amazing life marine life.

Skate-rag-picker

Seahorses look extraordinary. Their curved body is very similar to the chess piece of a horse, which is why they got their name. Despite their bizarre shapes, they are all fish and belong to the needle-like order.

Many of them have various outgrowths on the body and can change color in order to merge as much as possible with the surrounding background. The sea is especially good. Its body is very elongated and covered with numerous appendages resembling branches and leaves. Most of these appendages serve only for camouflage and do not carry other practical functions.

Like the rest of the skates, the rag-picker has a small head and a long stigma elongated by a tube. It acts like a vacuum cleaner, collecting prey along with water. The rag-pickers are colored green, yellow or blue, and are able to change shade, depending on their internal state and moods. Coloring also depends on what exactly the fish eat. Compared to their counterparts, they have quite big sizes. Adult skates reach about 30-35 centimeters in length.

Where do they live?

Seahorses are exotic animals and are not usually found in our area. They mainly prefer warm subtropical and tropical seas. The rag-picker seahorse lives off the western and southern coasts of Australia, in the waters indian ocean. They live at shallow depths or on coral reefs, not going deeper than 20-30 meters from the surface.

In fact, the species is an Australian endemic and is considered a symbol of the state of South Australia. Today, the horse is under strict protection, as it may be threatened with extinction. The main reason for this is water pollution. industrial waste, as well as catching rag-pickers by divers for souvenirs.

Nutrition

Ragged seahorses are solitary and do not form groups or flocks. They live on their own, feeding on small crustaceans and algae that are found on their way. They do not have any special tricks and devices for catching prey. Skates are slow and clumsy enough to be serious predators. Their whole secret is in disguise as algae, thanks to which they become invisible to their victims.

The rag-picker seahorse is devoid of teeth and has no movable jaw. He simply draws in his food and swallows it without chewing. The basis of his diet is plankton and mysid crustaceans, which he can eat up to several thousand per day.

The horse itself rarely becomes prey. It contains a lot of bones and few nutrients, so it is not of particular value to predators.

Lifestyle

The rag-picker is not a very active inhabitant of the ocean. It moves smoothly and very slowly, covering a distance of no more than 150 meters in one minute. In which case, he will not be able to escape from the enemy, therefore, with his whole appearance, he creates the impression of a branch floating with the flow. Almost transparent fins on the back and chest help it move in the water column. They constantly oscillate and tremble, creating the illusion of leaves.

The inability of skates to swim confidently makes them completely helpless during a storm. However, many of them have a coiled tail that helps them to cling to underwater plants and stay in place. This is well shown in the children's cartoon "Octonafts" in the series "Octonafts and Seahorses". The rag-picker does not have such a device, therefore, during a storm, waves often throw it onto the coast.