Marine angelfish
Pomacanthus is one of many genera belonging to the family of marine angelfish (Pomacanthidae). He currently has about thirteen species. Seven species of Pomacanthus belonged to the genera Holacanthus and…

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Marine aquariums
The ocean. Its limitless expanse excite and beckon and uncharted depths simultaneously frighten and fascinate. It was here millions of years ago life appeared. Resting on the red, or any…

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Miniature shark masterfully produces sashimi of big white relatives
White sharks ( Carcharodon carcharias ), as one of the most feared predators of the planet, a long time ago stand on the top of the food chain. However, it…

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birds

Sharks

Sharks are color blind

At the University of Queensland examined the eyes of the shark and came to the conclusion that those deprived of color vision.

The research object of scientists were 17 species of sharks. During microspectrophotometric analysis, it was found that 10 of them were no cones, intended for color vision, and their role was partially assumed the highly sensitive sticks. The remaining seven species that belong to three different families, had one type of sensing elements designed to detect wavelengths from 532 to 561 nm.

It is known that whales, dolphins and killer whales also stick with the cones of one type, which is able to recognize green color. Continue reading

What sharks live in the Black sea?
The fauna of the Black sea is markedly poorer than the Mediterranean sea. In the Black sea is home to 2.5 million species of animals (including 500 single-celled species, 160…

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CARE FOR AQUARIUM FISH - My files - file Catalog
Before you have a particular aquarium fish, not be amiss to ask, what conditions are considered optimal for the species: temperature, hardness and acidity of water, the requirements for lighting,…

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