NMFS implements this final rule to clarify the expiration date of the limited entry program for Illex squid, reestablish a minimum mesh requirement for the butterfish fishery, and remove a regulatory requirement for annual specifications to be published by a specific date. These measures were initially implemented by the final rule implementing the specifications for the 2005 fishing year for Atlantic mackerel, squid, and butterfish (MSB). These regulatory measures were intended to be of a permanent nature, unlike the 2005 specifications themselves, which were effective through December 31, 2005. An error in the final rule caused these three measures to expire; this rule restores the regulatory requirements. This action is being taken by NMFS under the authority of the Magnuson-Stevens Fishery Conservation and Management Act (Magnuson-Stevens Act).