Fish perch (photo). River fish is perch. Sea bass

All fishers and cooks are familiar with a perch fish. But it is known that this representative is not only sea, but also river. Between these two species there are significant differences both taste and external.

River perch

This representative is beautiful in terms of external indicators, and most often his color has a greenish-yellow hue. Also they are decorated with clear transverse bands. Their abdomen always remains bright. It has hard, large, sharp fins. The tail at the base is of dark color, and the lateral edge differs in scarlet color. The perch body is compressed laterally. The head grows into a hump. Also it is distinguished by small eyes.

This fish has no subspecies, like the rest of the families. Of course, there are perch, differing in color, size or other characteristics. But such differences, most likely, are a reflection of the ecological state of the reservoir and the diet of their food. But in any case it is a common river perch. What kind of fish would be caught on a hook, perch can not be confused with other species or families. It can grow up to half a meter and at the same time weigh 4.8 kilos. Lives up to 17 years. But often in the mass catch the fish does not reach this size and on average is about 15-30 cm. This is the age of the four-year-old. This species of fish lives in most reservoirs of Eurasia.

Life and development of a river inhabitant

This lacustrine-river species is predatory. He lives in the coastal zones in underwater thickets. In these places it is easier for him to get food - zooplankton and young fish of small fishes. But depending on the pond in which the perch fish lives, its diet may differ. The larger the pond, the richer the food base, and the "menu" of the fish becomes more diverse. In these cases, it begins to divide into three or two "races", which are distinguished by the speed of development, the habitat and the composition of food. Near the shore, the perch grows slowly, because in its diet, mainly vegetative and invertebrate food. If the perch lives at a depth, its growth occurs more quickly, mainly it feeds on young fish. Therefore, even living in the same lake, the timing of puberty in these inhabitants differ.

Spawning

Usually river fish perch becomes sexually mature at two or three years of age. The length of the fish at this point can be very different. Spawning always begins in the spring after the ice collapses. In the southern parts this period falls on February-March, in the northern regions for May-June. The female lays eggs for last year's plants. The number of eggs varies very much and is estimated in thousands from 12 to 300. River erythras have good survival of eggs and larvae. Before the larva appears from the calf, two weeks pass. Immediately the children begin to hunt for plankton. River fish perch (photo suggested above) spawns only once a year.

Marine representative

River and sea perch are completely different fish. Outwardly, one can find the similarities of these two underwater representatives, but in terms of the internal structure and other characteristics it becomes clear that these two species are completely from different orders. Sea fish perch (photo shown below) can have large eyes and bright red color. Usually it is inherent in deep-sea species. Such external data helps the fish to dwell in a constant semi-darkness. In perches that keep closer to the shores, the eyes are not so large, and the coloring is darker. Often they have a transverse pattern, but with age, it can become less noticeable.

There are approximately 90 species in the family of sea bass. The size of them is also very different. For example, the smallest grows only up to 20 centimeters, while the largest species in size reaches a meter. These inmates can live up to 15 years. Also it is worthwhile to know that the fish of sea bass is the second name of "smarida".

Habitat

Most of the representatives of this family live in the north of the Pacific Ocean in temperate waters. Four species of sea bass are found in the Atlantic Ocean. Also there are representatives in the Barents Sea, Black, Norwegian. These fish make migrations. Depth of habitat depends on their species and habitat. For example, individuals from the Barents Sea keep on 150-300 meters, and in the Black Sea they drop only 5-30 meters.

Lifestyle

The sea perch are flocks. The ration of individuals under 30 cm is composed of mollusks, caviar of other relatives, small fishes, underwater vegetation and all kinds of crustaceans. Sea fish perch, which keeps closer to the shores, usually lives in thickets and does not make any special migrations. They occupy a small plot. In order to hunt, these perches hide in ambush and suddenly attack the passing victim. Fish that stay deeper are more active, and usually they can be found far from the coast. In this case, the fish does not depend on the bottom. Larger individuals eat fish - herring, capelin, young cod, kashpak and others.

Reproduction of sea bass

All species from this family are viviparous. After the females are fertilized, they leave the males and flock to the schools in the places where the larvae will sweep out. Spawning occurs in perch every year. The amount of their litter is much larger than that of other vivipants, and sometimes can number up to two million formed larvae. The number of offspring depends on the size of the fish. The perch begins to throw larvae in the spring. The juveniles born to the world have an average size of 5.2 to 8 mm. As the throwing occurs in the sleeves of the warm current, the larvae enter the jet and are carried north. So they find themselves in the central regions and keep farther from the shore. All summer they are in the upper layer of the water. At this time, adults go to the east.

Fishing value

Fish perch is particularly valued in the fishing industry. Its extraction is by trawl way. Meat of this kind is very tasty and suitable for sale in smoked, frozen, salted and fresh. It is known that when cutting this fish it is worth to be extremely cautious, especially if the process is performed on a ship. The spines that are present in this species can be dangerous. Such a wound often leads to complications that last for several weeks, and sometimes even months. Sometimes this damage can leave a mark on the whole life, for example, the finger ceases to function.