Red-listed fish
European grayling . Thymallus thymallus (Linnaeus, 1758), European Grayling . One species of grayling. - Listed in the CSO (1994), the lists of the Bern Convention and IUCN and the…

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PIRANHAS RIVER MONSTERS
known for their sharp #teeth. The locals used the piranha teeth for the manufacture of knives. Piranha Piranha is a dangerous threat! Piranhas live in South American rivers. Fish piranha…

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Aquarium fishes – a complete encyclopedia beginner aquarist

Encyclopedia aquarist: My Pets – aquarium fishes- the Russian version is very easy to use, detailed and informative guide to the content of aquarium

Amazing electronic encyclopedia containing detailed information on nutrition and care of aquarium fish, with descriptions of fishes, with advice on maintaining the health of plants and fish, recommended requirements and conditions necessary for cultivation in house conditions even the most delicate and demanding species in your aquarium.

Aquarium fish – download encyclopedia of aquarium maintenance, feeding, care, health, breeding.

Electronic encyclopedia aquarist, which can be downloaded by the links below can be a great Advisor and teacher not only for aspiring owners of fish tanks, plants, shells, etc. and for experienced aquarists who already have their own experience in the aquarium maintenance and breeding of aquarium fish. Continue reading

The structure of the pharynx, the feeding of fish.

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

Catfish (Frozen fish)

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

BLACK sea and its inhabitants: who is dangerous to humans?
Fortunately, the really dangerous creatures, meeting with which threatens people severe poisoning, injury or even death, in the Black sea no. But still, one should be wary of some of…

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DANGEROUS SEA CREATURES
Edward R. o Ricciuti, ichthyologist-lover, scuba diver, author of several popular science publications, a former employee of the new York Zoological society, introduces readers to marine and river animals and…

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