Finfish Breeding and Hatchery Management

Use of anaesthetics

Protocol

Take weight and length of fish

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 Prepare a solution of an anaesthetic (e.g. quinaldine) of varying doses, i.e. 0, 25, 50, 75 ppm, etc.

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Leave fish in the anaesthetic solution and record induction time for different stages of anaesthesia

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After the specified induction time, transfer the fish to a tank containing fresh water with aeration

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Record recovery time

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 Record survival of anaesthetized fish at different periods

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Find out optimum dose for different stages of fish