To do a needle aspiration it helps to have a needle & syringe. You do want to have a good knowledge of fish anatomy, as well as a feel for venipuncture or plebotomy. Start from the back, lifting under the scales, at an angle, and withdraw any gas or fluids.
You also want a broad spectrum antibiotic in the tank, as well as some epsom salt, the epsom will help with withdrawing any fluid. Any puncture wound is an infection waiting to happen, a little seeping of body fluids is actually an advantage, as it naturally cleanses the wound.
You also want a broad spectrum antibiotic in the tank, as well as some epsom salt, the epsom will help with withdrawing any fluid. Any puncture wound is an infection waiting to happen, a little seeping of body fluids is actually an advantage, as it naturally cleanses the wound.