California Code, Fish and Game Code - FGC § 7856

(a) The fish are taken under all existing commercial fishing laws and regulations and, except as provided in subdivision (f), the fish is of a species and size that can be lawfully taken under sportfishing regulations in the area where taken and are taken incidental to normal commercial fishing operations.

(b) The fish is separated from other fish and stored with other foodstuff for consumption by the crew and passengers aboard the vessel.

(c) The fish shall not be bought, sold, offered for sale, transferred to another person, landed, brought ashore, or used for a purpose other than consumption by the crew and passengers.

(e) The quantity of fish prepared shall not exceed the aggregate sportfishing bag limit for that fish applicable to the total number of crew members and passengers on board the vessel.

(f) Notwithstanding other provisions of this section, kelp bass, sand bass, spotted bass, yellowfin croaker, spotfin croaker, California corbina, and marlin, shall not be possessed aboard a commercial fishing vessel while that vessel is on a commercial fishing trip.  Lobster, salmon, or abalone shall not be possessed aboard a commercial fishing vessel while that vessel is on a commercial fishing trip for preparation for human consumption pursuant to this section unless that lobster, salmon, or abalone is taken and possessed in compliance with all applicable laws pertaining to commercial fishing methods of take, licenses, permits, and size limits.  Sturgeon or striped bass shall not be possessed aboard a commercial fishing vessel.  A person shall not take or possess a fish on a commercial fishing vessel under a sportfishing license while that vessel is engaged in a commercial fishing activity, including going to or from an area where fish are taken for commercial purposes.