They can only spawn in darkness, but will not be hurt by sunlight. Mineral Water and other liquids can kill them though. Tamed Corrupted Chizzards as Pets will NOT provide you with Chizzard Eggs like other Chizzard-types (Chizzard, Night Chizzard, Blizzard Chizzard) will do. Instead you can obtain different materials and things from this Chizzard, either by killing it or taming it and harvesting from it after it has become your Pet: and perhaps also Globs of Goo and Bones like so many other creatures, including corrupted ones.