When treating a venomous fish wound, what should be done after cleaning the wound?

Soaking a venomous fish wound in hot water is important because heat can help in alleviating pain and inactivating some types of venom. This method works by mimicking the body's natural response to injury, which helps to improve blood flow to the area and can lessen the effects of the venom. Immersion in hot water (typically around 40-45°C or 104-113°F for 30 to 90 minutes, or as tolerated) is particularly effective for stingray and stonefish injuries, where the heat can break down toxins.

Other methods like applying a bandage or wrapping the wound in ice could lead to complications or may not be effective in treating the toxicity of the venom. Keeping it dry does not provide the necessary assistance to neutralize the effects of the venom. Therefore, the treatment method of soaking the wound in hot water is the most therapeutic response in this situation.