delicate

Equipment for a saltwater aquarium

Great importance in the successful maintenance of marine aquarium has a competent selection of equipment. It shall conform to the dimensions of the sump and the aquarium. to be sufficient capacity and reliable. In this article I want to address briefly each device, so you have a rough idea about the equipment.

In your aquarium you should provide a good turbulent flow, the lighting that you need for aquariums with marine fish and reef systems, heating and possibly cooling water. That is, the “Three pillars” of the marine aquarium – flow, lighting and temperature. But how to clean the water from the detritus and waste of invertebrates and fish? Here, fortunately, there are completely different approaches, ranging from simple weekly water changes, to complex systems, the whole complex biological and chemical water purification. Let’s look at each element separately.

Such fire in the ocean, melkoporistye (SPS) corals in nature live in strong currents, fighting for space is no joke, and many corals and animals are used to living in places with extremely strong water circulation. As a reward for brings them plankton and different food particles. Others cannot tolerate even moderate force, and not fully expanded, discosoma and ricordea belong to this group. Continue reading

The first vertebrates

Among vertebrates there are more than 25,000 species of fish. Depending on the environment they have many specialized forms, the variety of which at least not less than among all terrestrial tetrapods. The jawless fish are very similar.

Actually the Fish appeared slightly less than 400 million years ago. They are divided into two clearly obosobeni group. The first is a cartilaginous fish, i.e. sharks, rays, chimaeras. The second bone of the fish. Bone fish in turn are divided into ray-finned (most modern species) and lobe-finned or maistraatti that have paired fins similar to limbs of four-legged. In the latter group only 4 species: 3 types deacetylase fish and latimeria from the order Alcantaras.

To the cartilaginous fish is about 850 almost exclusively marine species, the length of which varies from 30 cm to over 15 m. Most — fast floating predators with several rows of sharp teeth in both jaws. Although their skeleton is cartilaginous, the General structure is the same as that of a typical bony fish. There is a real vertebrae and paired fins. The body is many streamlined with the maximum width closer to his chest, the muzzle sharp. Narrow, lobed tail bends from side to side, providing a translational motion. I bollenstreek fish the upper lobe of caudal fin longer than the lower: it goes far back to the spine. Front (breast) paired fins serve as rudders, and also with unpaired dorsal fins – stabilizers, helping the fish to maintain balance when moving. Gill slits can be from 5 to 7 pairs. Water flows freely through the throat and Gill slits extends outwardly, along the way giving oxygen to the blood, washing the delicate Gill filaments. Continue reading

Sea menu for the child

About the absolute benefit of seafood is known to all. These useful products are a must in the menu of children.

Minerals (calcium, phosphorus, iron), trace elements (iodine, fluorine), vitamins (A, D, E, B2, B12, PP), polyunsaturated fatty acids – all in sufficient quantities is contained in seafood and is very useful for strengthening the immune, nervous system and mental activity. Besides sea food, low-calorie and contain a lot of protein that is easily digestible.

Therefore, marine fish, shrimp, oysters, octopus, squid, mussels, red and black caviar, sea cabbage and other seafood be sure to enter in the child’s diet. But don’t rush – many children they can cause allergies, and taste many of them quite specific, to them love, they need to understand.

When and where to start

Fish. Many pediatricians agree that a child to offer the species of fish closer to year. The other half claims not earlier than in 2-3 years. So leave this matter to the discretion of the mother – there’s no one better knows the kid, and all the children individually. Continue reading

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