Watching the fish

Mission observations: 1. Set the time of spawning fish of your river or pond, and to note the behavior of fish during this period. 2. Trace the beginning of the "bite" and find out how to catch different species of fish from local fishermen and experienced anglers. 3. Produce in vitro fertilization of eggs and to observe its development. Do so. During the spawning catch ikryanyh females, which can be found on particularly thick sides, and several males. Wrapped in a towel female, stroke her body, covering two fingers and gently squeeze out the eggs in a pre-prepared clean, dry and smooth plate or smooth porcelain bowl. Having obtained thus spawn the same with doing a male-moloshnikom. Squeeze out the contents of Pego milk-white-turbid liquid semen and pour it spawn. When this operation is over, several times shaking the cup of milk to mix well with caviar. When this happens, you can release the eggs in a premixed tank with lots of aquatic plants. The aquarium should not be predatory insects and other animals that eat caviar. Number of eggs in the aquarium should be slight as not to create closeness and lack of oxygen. In the aquarium for a bucket of water should be no more than 20-30 eggs. Water in the aquarium daily otcherpyvaetsya from the surface for a few glasses and replaced with fresh but not cold water (not cold that prevailed in the aquarium). Best use of a water supply system in order to maintain the constant change in the aquarium water. However, you can get it directly from the river or pond already fertilized eggs after spawning one or the other fish. It should be noted: a) water temperature, b) the period of planting eggs in) the period of withdrawal from calf fries, d) ways to fry food at first and after the fry will grow up to twice the initial value. For comparison and bring overall timing of spawning of the ordinary fish.