Importance fish wealth

                          Fish handling definition: 

All the different transactions on the fish in various stages (eggs, larvae, fry, fingerlings, great fish, mothers) in addition to transportation and storage of fish before and during harvest and transactions post-harvest, and the success of these transactions is primarily intended to preserve the fish in the vitality of high-On the best possible picture.

Stages of fish trading:First, before and during the harvest:Fish are affected deeply influenced the process of fishing as a result of low water levels and the high level of turbidity and large densities found in the grille.Therefore you must consider the following when making the harvest process:Have to complete the process of harvesting the least amount of stress and always remember that the current fish harvested are always under unsuitable conditions and it must not add harvest additional stress for the fish.1 that these fish (fry - fingerlings) as possible be used in the farming of Tali program.2 These fish are hunted for the purpose of marketing.Different fishing ways:

1 - net.2 - Ajawaby traps.3 - Full liquidation of the basin and collect the fish in a combined basins.§ type of fish as the different types of fish affected by the operations of the harvest in a different example, assume tilapia and carp normal harvesting operations, compared to other types of fish Kalbory and silver carp, which must be handled very carefully. Generally, the fish bear harvesting operations more than crustaceans (shrimp - crab) and Alokhtaboutiat (octopus - Alcalemary - Alsibia), fish containing high percentage of fat more affected harvest operations of other fish.§ During the fishing process may some fish die as a result of the accumulation of fishing nets and a result of the stress that their fish while trying to get out of the nets and fishing equipment.§ There is a natural and chemical changes occur after the death of a fish out of the mucus layer of the skin as well as the occurrence of hardening of the muscles, including the phenomenon known as stiffness throwing. Rigor mortis
Second, transactions post-harvest:

The transfer of fish:The transfer of live fish from the more fish the importance and seriousness of the trading operations where it is intended to fish transfer (fry - fingerlings - mothers - marketing fish consumption) High vitality and in large numbers and at the lowest mortality rate, to be used in the activity of aquaculture, and there are many factors that affect the fish transfer including:1 - size and weight of large fish:(Fingerlings - mothers) more affected by transfers of small fish (larvae - fry).2 - dissolved oxygen in the water:Of the most important factors that affect the efficiency of transport operations and depends on temperature, fish size and density per cubic meter.3 - carbon dioxide:Produced by breathing fish are transported free image toxic to fish at a concentration of 25 mg / l will affect the healthy blood's ability to carry oxygen.4 - concentration of ammonia:
At a concentration of 1 mg / l of toxic outputs When this limit blood oxygen content of at least 15%, leading to suffocation, and operations ventilation is effective to remove ammonia.It is actions that help to prevent the increase of the concentration of ammonia:1 reduce temperatures.3 give the fish a chance to empty her digestive system before the transfers.4 change the water in the long-haul flights.5 - temperatures:An increase of temperatures during transport operations will increase the harmful effects of carbon dioxide and ammonia also leads to increased oxygen consumption and a lack of saturation of the blood with oxygen, so you must fish transfer at low temperatures (early - or night morning) In the case of the high temperatures used crushed ice to reduce temperatures not allowed to put ice directly on water transport. 6 - bacteria:High bacteria levels become competitive for the fish in the oxygen available, which negatively affects the movable fish.
Ways and means to move the fish:1 - tanks TanksTanks made of fiberglass with a thickness and efficiency of large isolated and fitted with a ventilation system (Skips - Hobbies - oxygen) and openings external of the highest for the exit of carbon dioxide, ammonia, and shall wash and disinfect tanks after each transfer in order to avoid contamination as a result of previous transport operations. A car equipped with a number (4, 6 or 8 tank) and equipped with an air pump and the capacity of each tank 100000-200000 units fry as seed size and distance of transport and the air temperature and the use of these vehicles to transport long distances.Some farmers and the transfer of fry in tanks of zinc capacity of 1 cubic meter extension Baltnk compressed oxygen tube. It also some farmers transfer fry in waxed Plastic are repeated it in the car and coverage can also transport in drums, plastic barrel capacity of 60 liters are used for short distances with total 2000-3000 fry an average single weight grams depending on the transport distance and the temperature of the air and fill a third of the water barrel.

Third: Localisation of fish AcclimatizationIs the supply of nursery ponds or breeding Seed or fingerlings of the most important elements of aquaculture operation, after the collection of fry and fingerlings from assembly centers or from hatcheries are transported to farms for storage and often these stressful fish are the result of fishing, transport and where the different aquatic environment characteristics in most cases, so You must make appropriate localization processes to avoid any shock caused by the difference.
1 - thermal Localization Thermal AcclimatitionThis is done by measuring the degree of aquarium water temperature as well as the temperature of the tank loaded Seed and appreciation of difference thermal between them and are working to equal the temperature by adding a small amount of intake of the aquarium water to water the tank very slowly and gradually and continue to do so until the equal temperature inside the tank and in the water basin . And time of localization will depend to a large extent on the thermal difference, and are advised to conduct heat acclimatization before transport, especially if a large difference.2 - Localization teams salinity Salinity AcclimatitionThis type of regionalization is in parallel with the former type, especially for fish that are being stored in water vary in the degree of salinity. (Salty water - fresh water) and, for example, can fish rainfed family to bear the localization teams salinity of the sea water to fresh water gradually and over a period of time 2-3 Saatdon impact on the vitality of the fish.3 - Localization teams pH PH AcclimatitionIt is localization process for teams pH in parallel with localization teams salinity and temperature and the same way. Some fish have a severe allergy to the PH teams need localization for a longer period.Often localization process that takes three hours after which it is vital fish test developed small number of fry in the pot by the amount of water basin and vitality NOTE If anything is lowered all the fish to the aquarium did not happen to her. It is noted that while it takes the regionalization of the fish the more help on the vitality of the fish increase and can withstand the conditions of the new place, and in some cases are regionalization fish the next day after lowered basins Fiberglass, and because the localization process and storage of fish is often accompanied by a census of the number of current stored it must therefore be quick and non-stressful for fish counting process.