The structure of the pharynx is also closely linked to feeding habits of fish. As indicated, the number and structure of Gill rakers may be very different — from a few small hard bumps predatory fish to a complex network of frequent rakers in silver carp — Hypophthalmichthys molitrix (Val.), litumelo planktonic algae. The mullets — Mugili – dae — muscular throat adapted for crushing lisovogo clump, consisting of detritus and vegetation. Some fish developed teeth on the pharyngeal bones. Some they are on top – and ninepatch bones, as, for example, wrasses — Labridae, or only ninepatch, as, for example, cyprinids — Cyprinidae.
Haeckel (1843) divides nizhnelomovskie teeth of cyprinid by the nature of the structure related to their function into four types:
1) hollowed — excavati, a type of Longhorn beetle,
2) chewing — mastic torii, a type of carp, Continue reading
Fishing giant fish — fishing threat. Huge swamp of matter, speed devil hulks, giant predators of the deep — the most interesting specimens to study science, people and just the extreme. In the depths you can find a huge, strong and even prehistoric predators. You can find such representatives, which are not known to the slightest fact. A real opportunity to explore predatory fish is available to us through the aquarium. Surprising is the fact that they are huge in size, each time increases more and more.
The most dangerous and worst are dangerous and a threat to the entire underwater world. But most often such giants as fish — Marlin the most desirable prey for any athlete angler. Catching Marlin and try to get him out, the fish starts to jump, as a result, she spends almost all its energy. Taking advantage of this moment, the fishers set on the fish label. Tags similar GPS Navigator: provides complete information on location of fish, water temperature, depth. Such labels help scientists obtain information about the depths of the seabed, biological balance, life and survival of fish. Continue reading
Wels catfish (Silurus glanis) large fish, reaching 5 m length and 300 kg weight, inhabiting rivers and lakes of Europe from the Rhine to the East. To the North of the som is to the South of Finland, South to Asia Minor, the Caspian and Aral seas and flowing into their rivers. No catfish in the rivers of Siberia. There is no com also in England, in the Iberian Peninsula, in France, Italy and Western Greece. Soma colour variable, usually olive-green, almost black back, white belly, flanks irregularly shaped spots. Small reed form, inhabiting the southern part of the Aral sea, intensive black. Dorsal fin catfish in a tiny, barely noticeable, no fatty fin, but the anal is very long. The upper jaw bears two long whiskers on the bottom is four short. Huge mouth soma gives away the predator. Really, catfish— a voracious predator that eats small fish, frogs, large bivalves. There were cases of attacks soma a water bird swims and the river dogs. Still, the voracity of the catfish greatly exaggerated. Usually catfish are holding in the Continue reading