Red-tail catfish, or Phractocephalus
Practieal, or redtail catfish is a beautiful fish, but very large and predatory. In order to contain such a catfish, you should have an aquarium of at least 500 liters.…

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Fishing in Ukraine: Transcarpathia Large catfish are caught on spinning.
A fisherman from Transcarpathia (Ukraine) during sports! fishing on the Tisza river caught a big catfish - fish draped 52 kg, and its growth reached 2.10 m About the secrets…

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Food for aquarium fish

It is no secret that on the correct feeding of aquarium fish depends on their health, well-being and breeding success.

Therefore, you should thoroughly approach the question of choosing food for aquarium fish.

Live food for aquarium fish

Motyl. Perhaps the most common live food sold in stores. The most valuable food, loved by all, without exception, carnivorous fish. The signs of quality bloodworms – it needs to be in color bright red. Burgundy or dark red color of the moth suggests that it had deteriorated. Such bloodworms to give the fish is not worth it. Bought bloodworms should be rinsed in running water.

Store food in the refrigerator in the vegetable compartment in a moist cloth. In this form it can be stored up to 7 days. You can keep the bloodworms in frozen form, if to prepare him for the future. Continue reading

About fish

Our planet is inhabited by almost 20 thousand species of fish. About 1/10 of them are commercial. They give people a lot of valuable products: food, medicines, fertilizers for the agriculture, pet food, industrial oils, raw materials for light industry.

To move in the water, have to spend a lot of energy. Nature took care of the fish, giving their bodies zaradougou streamlined shape. The speed of the fish (scombridae, tuna, sharks) in its form and speed resemble that of a torpedo. The fastest fish is considered fish-sailfish, swordfish and Marlin, which reach speeds of up to 130 km/ h. The rate of freshwater fishes is typically lower, but in critical moments of his life, in the moment of impending danger or in the event of an attack on their prey, they can take a short term shot at a speed of 1-2 km /h. Good speed swimmers usually are found in rivers with current (sabrefish, Chub, nase, Dace, salmon). The speed of the fishes living in stagnant water far below, but they are more nimble, nimble (carp, bream, Rudd). Continue reading

Oceanic nekton

The ocean abounds with excellent swimmers who, in the words of the famous German nineteenth-century biologist Ernest Haeckel, “free to find their own way”. They can resist the strong current of water and to choose their own way, different from the animals of the plankton. The combination of these actively swimming animals E. Haeckel called the nekton, which means “floating”. Technically, the nekton are aquatic snakes, birds, and animals, but here we will talk only about the two groups of nektonic organisms — the fish and cephalopod molluscs.

Important nektonic animals adaptations to life in the water column of the ocean, according to Professor Yuri Aleev are maintaining the body in a suspended state, creating a driving force, reducing the resistance of the counter flow of water, control the movement of the body, as well as in the ability to disguise and protection. Continue reading