All fishermen and cooks are familiar with perch fish. But it is known that this representative is not only sea, but also river. There are significant differences between these two species, both in taste and appearance.
River perch
This representative is beautiful in appearance, and most often its color has a greenish-yellow tint. They are also decorated with clear transverse stripes. Their belly always remains light. It has hard, large, sharp fins. The tail at the base is dark in color, and the lateral edge is distinguished by a scarlet color. The perch's body is laterally compressed. The head develops into a hump. He is also distinguished by small eyes.
This fish has no subspecies like other families. Of course, there are perches that differ in color, size, or other features. But such differences are most likely a reflection of the ecological state of the reservoir and their diet. But in any case, this is an ordinary river perch. Whatever fish is hooked, the perch cannot 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 approximately 15-30 cm. This is the age of four-year-old individuals. This type of fish lives in most water bodies of Eurasia.
Life and development of a river dweller
This lake-river species is predatory. He lives in coastal areas in underwater thickets. In these places it is easier for him to get food - zooplankton and young small fish. But depending on the reservoir in which perch fish lives, its diet may differ. The larger the reservoir, 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 differ from each other in the rate of development, habitat and food composition. Near the shores, perch grows slowly, since its diet is predominantly plant and invertebrate food. If the perch lives at a depth, its growth is faster, it mainly feeds on juveniles of other fish. Therefore, even living in the same lake, the timing of puberty for these inhabitants is different.
Spawning
Usually river perch fish become sexually mature at two or three years of age. The length of the fish at this point can vary greatly. Spawning always begins in the spring after the ice melts. In the southern parts, this period falls in February-March, in the northern regions in May-June. The female lays eggs on last year's plants. The number of eggs varies greatly and is calculated in thousands from 12 to 300. River perches have a good survival rate of eggs and larvae. Before the larva appears from the eggs, it takes two weeks. Immediately, the babies begin to hunt forplankton. River fish perch (photo suggested above) spawns only once a year.
Marine Representative
River and sea bass are completely different fish. By external signs, you can find similarities between these two underwater representatives, but by the internal structure and other features, it becomes clear that these two species are completely from different orders. Sea fish perch (photo shown below) may have large eyes and a bright red color. Usually this is inherent in deep-sea species. Such external data help the fish live in constant semi-darkness. Perch that stay closer to the shores have smaller eyes and darker colors. Often they have a cross pattern, but with age it may become less noticeable.
There are approximately 90 species in the sea bass family. Their size also varies greatly. For example, the smallest grows only up to 20 centimeters, while the largest species reaches a meter in size. These inhabitants can live up to 15 years. It is also worth knowing that sea bass fish has the second name "smarida".
Habitats
Most of the representatives of this family lives in the North Pacific Ocean in temperate waters. Four species of sea bass are found in the Atlantic Ocean. There are also representatives in the Barents Sea, Black Sea, Norwegian Sea. These fish migrate. The depth of habitat depends on their species and habitat. For example, individuals from the Barents Sea stay at 150-300 meters, while in the Black Sea they descend only 5-30 meters.
Imagelife
Sea basses keep in flocks. The diet of individuals under 30 cm is made up of mollusks, caviar of other relatives, small fish, underwater vegetation and all kinds of crustaceans. Sea fish perch, which keeps closer to the shores, usually lives in thickets and does not make special migrations. They occupy a small area. In order to hunt, these perches hide in ambush and suddenly pounce on a victim swimming nearby. Fish that stay deeper are more active and can usually be found far from the coast. In this case, the fish does not depend on the bottom. Larger individuals feed on fish - herring, capelin, cod fry, kashpak and others.
Reproduction of sea bass
All species from this family are viviparous. After the females are fertilized, they leave the males and huddle in flocks in those places where the littering of larvae will occur. Spawning at perch happens every year. The number of their droppings is much larger than that of other livebearers, and at times can have 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 that were born have an average size of 5.2 to 8 mm. Since throwing occurs in the arms of a warm current, the larvae enter the stream and are carried away to the north. So they find themselves in the central regions and keep further from the coast. All summer they are in the upper layer of water. At this time, adults travel east.
Productionvalue
Perch fish is especially valued in the fishing industry. Its extraction takes place by trawling. The meat of this species is very tasty and is suitable for sale in smoked, frozen, s alted and fresh form. It is known that when cutting this fish, you should be extremely careful, especially if the process is carried out on a ship. The spines that this species has can be dangerous. Such an injury often leads to complications that last for several weeks, and sometimes even months. Sometimes this damage can leave an imprint for life, such as a finger that stops functioning.
