S.C. Code Ann. § 50-13-70

Except as otherwise provided, there is no closed season for taking fish, however, when because of natural or other conditions fish are vulnerable to predation or are in distress and in the professional judgment of the department need temporary protection or in order to protect the public safety, the department may declare a closed season for taking any species until the condition has abated but the closed season may not be longer than ninety days. The department shall give notice of the closure by the most expeditious means. It is unlawful to take or possess the affected species during the closed season.