Fish should be '''protected from temperature fluctuations and oxygen depletion''' during handling. Exposure to sunlight or excessive heat can be damaging to most fish. The gills should be kept wet at all times, and this allows a considerable amount of time for examination out of the water. | Fish should be '''protected from temperature fluctuations and oxygen depletion''' during handling. Exposure to sunlight or excessive heat can be damaging to most fish. The gills should be kept wet at all times, and this allows a considerable amount of time for examination out of the water. |