Most fish lay eggs, and it is fertilized outside of their body. Fish that spawn, are called oviparous. But some fish give birth to live fry. Such fish are called viviparous.
To live-bearing are guppies, sword fish. The eggs of these fish are fertilized inside the mother’s body and develop there until the fry. At a certain time they are born. This happens 21 days after fertilization.
The number of eggs, fertilized and deferred, differs greatly depending on the type of fish. Some fish lay eggs and abandon her, without showing her any more interest. This is a fish that produce huge amounts of eggs. Those fish that look after their young, they lay only a few eggs.
Caviar can be of two types. One kind of eggs floats on the water surface, the other sinking. The caviar, which floats, is called pelagic. It is usually tiny, bright and contains a lot of protein. Caviar, which is sinking, is called Donna. It is usually harder and more protein in it. Continue reading
Going on vacation to Egypt, it should be remembered that in the Red sea is home to many dangerous species of fish and shellfish and that your vacation turned into a nightmare, it is necessary to observe elementary safety rules.
One of the biggest predators – shark in the Red sea about thirty species. As a rule, sharks don’t attack people for no reason, not approaching the coast, but accidents still happen.
Very poisonous mollusk, the cone, seeing him, do not rush to grab hands. The venom of this marine life causes an immediate paralysis of the limbs, can occur stop breathing and anaphylactic shock. According to statistics, every third bite of the cone is lethal.
Starfish. Are about the size of one meter. It is beautiful, they have at their ends are sharp spikes. If you accidentally step on star, get a sharp prick and burning sensation. Continue reading
Golden catfish (bronze tetras hiding) is a benthic fish of the family of armored. Its name they received because of the unusual coloration that varies from light silver to copper tones. There are also albinos. Mouth of a catfish is located at the bottom of the head and equipped with sensitive antennae, which serve as supplements to the organs of taste and touch, and also allow to find food and navigate in complete darkness. Females are larger than males and have more rounded dorsal fin.
The content in the aquarium
Tetras hiding have peace and quiet temper, therefore, can coexist in an aquarium with any other fish. Their body is covered with rows of bony platelets, which are reliable protection against aggressive larger fish, but, despite this, it is better to settle them with proportionate neighbours and, preferably, without competition for food on the bottom. Continue reading