Morphology of the (Alburnus chalcoides) during growth

The Alburus chalcoides (Guendenstaedt, 1772), of Cyprinidae family, is a valuable bony fish of the Caspian Sea. Checking the start of a feedind is one of the most significant cases of larval growth. Actually, Specifying the day of opening the mouth of the fish and the day the active nutrition and pelleting is started will also affect the growth of the fish, especially as the guinea pig fish feed more on protein sources and this will speed up the digestion and absorption of food. The King of Gypsy was opened from the fifth day after hatching his mouth and was seen as a gutter. To evaluate morphological characteristics of larvae and infants, 10 samples were considered.The length of larvae on this day is 4.6 ± 2.2 mm and weighs 0.010 g. On this day, larvae can use environmental food in the water, but given the size of the mouth of this fish on the eighth day to the size The size is 84 micrometers (5.5 ± 4.4 mm in length and 0.013 grams in weight). This day was calculated as a starting point for feeding pellets, which could be used for larvae in addition to perennial food from pellet. The purpose of this research is to determine the appropriate feeding time for fish.