Water Quality Variation while Transporting Hypselobarbus Kurali Anesthetized with 2- Phenoxy Ethanol

Sherly Williams E

Abstract

Transportation of fishes from study site to the laboratory needs lot of care as the fish is very sensitive to even minor changes in the surroundings. The prime response from the fishes was random running and hitting its head and body against the medium in which it is transported. Secondly it was found excreting a lot of ammonia waste which will degrade the water quality and there by lead to poor survival chances. Anesthetized transportation thus forms a boon in aquaculture. The fish meant for transportation is anesthetized hence it will not run and also will not eliminate wastes. A solution of 1 ml of 2- Phenoxy ethanol in 5 l of water was prepared and used for the transportation trials which were conducted in heavy duty poly bags.  The average weight of brood fish was 200 g.  Five numbers of brood fishes were accommodated in a bag for the transportation for 2 hours. Water quality parameters like temperature, pH, dissolved oxygen, ammonia and alkalinity were assessed following standard methods using water quantity analyzing probe (Eutech, S-660).  The studies were carried out repeatedly four times during transportation so as to confirm results. The results have shown that as time proceeds the water quality of control changed drastically whereas the experiment retained the change in water quality towards a standard range throughout the transportation trial. As the fishes are anesthetized the biological activities will slow down which result in lesser consumption of oxygen, low excretory waste and so on. So anesthetizing H.kurali with 2- phenoxy ethanol is advisable. 

Keywords

Anesthesia; Hypselobarbus kurali; transportation; 2- phenoxyethanol; aquaculture

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