Choosing an aquarium
To begin with, what is there is an aquarium. Let’s just say the aquarium – a tank of water where the fish are placed and plants – is the main element aquarium.
So, you have the desire to have a home aquarium. Before you acquire an aquarium, you should accurately determine for themselves what requirements it must meet. First, it is necessary to think and decide what size you want to have an aquarium, where he will stand, etc. If the aquarium will stand in the living room, it’s worth thinking about her surroundings, including the style of furniture, which must match the home pond. Anyone who loves tinkering might want to create their own model of the tank and place it according to your taste and techniques.
In any case, the aquarium must be selected in accordance with the desires and taste akvariumista capabilities. However, it should be noted that the fish live well and multiply only in this aquarium, where they created conditions similar to the natural. Some fish can live for a certain time and in a simple three-liter jar. To correct the content of their needs vessel with a much larger volume of water. A large aquarium is always better than small, as small aquarium requires blshego care owner and brings a lot of anxiety.
There is a pattern that the lower tank, the poorer the appearance and growth of the fish. Many species of fish, particularly ikromechuschie, if they contain them in small aquariums cease to multiply. Moreover, in a small aquarium may be sudden changes in temperature and chemical composition of water, which does not occur in natural waters. The greater the capacity of the tank, the more stable it is preserved biological balance, and therefore it is easier to maintain. Even without a heater, the temperature of the water in that tank had not dramatically change its performance. In a small tank water temperature can only be for one day decreases and increases to several degrees, as is well known from the practice of wide fluctuations in temperature effect on fish, plants and to all biological processes in the aquarium are extremely unfavorable. Continue reading
Hazardous inhabitants of the Black Sea
And yet, some sea creatures to be feared near the coast of the Crimea? Represent a threat to several species of fish and jellyfish.
Jellyfish Aurelia has the form of a flat umbrella with a diameter of 10 – 20 cm. Around the edges of which are numerous threadlike tentacles. Rhizostoma – larger jellyfish dome with a diameter of up to 40 – 50 cm. Which departs from 8 large processes. Jellyfish tentacles are equipped with so-called stinging cells; by touching that person receives a burn on both nettles, traces of which are stored in the body for several hours.
The most painful sensations occur when the burn mucous takaney. In the coastal waters of the Crimea is most common is Rhizostoma. Especially many of these jellyfish observed in August.
Marine ruff – a brownish-brown fish, preferring mostly rocky bottom and rocks. Medium size – 10-20 cm. Eleven rays anterior dorsal, one ventral and anal fins have three poisonous glands that produce the toxin. The fish lives on the bottom. At a depth of several meters. In the crevices of rocks. Himself anyone not attacking, but it is very convenient target for marine rifle. Slow-moving, the ear of a Succulent.
Be careful to spearfishing. Do not touch the fins and prickly thorns, located on the back of the fish.
Prick them brings, though short-lived, but quite painful. Poison may have a fever.
The most toxic venom of sea perch in the early spring. Continue reading
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