winter

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The water temperature for aquarium fish

Have you ever wondered why different fish need different temperature? And what is the impact on them of the discrepancy? And how they are sensitive to changes? Quick changes in temperature aquarium fish suffer badly, this is one reason, from which newly purchased fish die. To fish accustomed, they need to acclimatize.

Simply put, the higher the water temperature, the faster fish grow, but also age faster. We have collected some of the frequent questions about the temperature for aquarium fish and tried to answer them in an accessible form.

Fish cold-blooded?

Yes, their body temperature depends on the ambient temperature. Only a few fish, for example, some catfishes, can modify body temperature, and even sharks maintain a body temperature several degrees higher than the temperature of the water.

This means that the water temperature directly affects fish?

Water temperature affects the rate of physiological processes in the body of the fish. For example, in winter, the fish of our ponds are inactive, because the metabolism drops significantly in cold water.

At high temperatures, the water holds fewer dissolved oxygen, and fish is very important. That is why in the summer we often see how the fish rise to the surface and breathing hard.

Bystryanskaya temperature aquarium fish suffer badly, this is one reason, from which newly purchased fish die. To fish accustomed, they need to acclimatize. Continue reading

Corals and fish of the red sea

There are on our planet, the sea of extraordinary beauty, attracting millions of tourists from all over the world for its clear water, beautiful corals and diverse fishes. It comes to the Red sea. This is one of the most beautiful places of our planet.

Why do they call it? No exact answer. Someone thinks that it got its name due to algae that in some months, the sea change colour from azure blue to red. And some prefer a more interesting explanation. According to the Bible, Moses led the Jews from Egypt to Israel through the Red sea. When they approached the shore – the water parted and exposing the bottom. It consisted entirely of canyons, cliffs and hollows. The path was very rugged and a lot of Jews died, bleeding to death. That’s why it was called the Red sea.

The red sea is a Gulf of the Indian ocean. It is situated in the deep depression, formed millions of years ago between the Arabian Peninsula and Africa. An area of almost 500 thousand square kilometers, with more than two thirds of the sea is located in tropical zone. The average water depth from 500 m to 1 km in the middle part of the sea is crack, as if dissecting it into two parts. There is a depth of 2.5 to 3 km. makes it different from other seas of our planetat that the Red sea is not no river flows. The Suez canal in the Northern part of the sea – the work of human hands, it is rather narrow, so the natural circulation of water occurs only in the southern part of the sea through the Bab-El-Mandeb.

This natural isolation has led to the fact that in the Red sea the most clear water. Usually the rivers carry their waters in the sea sand, debris and dirty water. But in this sea water is so clear that you can easily see the incredible beauty and diversity of “underwater life” of the red sea.

The absence of influent rivers has also led to the fact that sea has the most salty water among all seas on our planet. The salt concentration here is that to drown is almost impossible. It is well suited for those who decided to learn to swim and likes to swim far away (fatigue less than in the other seas). Continue reading

Dangerous dwellers of the Mediterranean sea

Upon closer inspection, the monster turned out to be some third-rate, fit only to frighten their young children. In a word, to the Maldives with their tropical abundance of all poisonous reptiles our sea obviously does not hold. However, read it and was horrified. It turns out that affectionate and warm Mediterranean sea just teeming with all sorts of creatures, ready to grab the tender, defenseless body of the swimmer, to wrest from it a piece of meat to poison or, at worst, a painful sting.

However, in 15 years of searching for adventure and snorkeling the biggest trouble that happened to us, is hopelessly corrupt bottoms, on which “spit” ink a startled octopus out of water.

The main principle for anyone wanting to dive into the sea plain and simple, as a rake: “I don’t know – don’t touch” . The more dangerous animals and the more troubles it can cause the bather, the careless behaves closer and admit to myself, naively believing that everyone is familiar with her bad temper and will not touch.
If you sobiratelnitsa on wild stony beaches, to the main principle “don’t touch anything” it would be good to add another special Slippers . no sea urchin is not terrible. Continue reading

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