California Code, Fish and Game Code - FGC § 8284

(a) Subject to this article and Article 1 (commencing with Section 9000) of Chapter 4, crab traps, as described in Section 9011, may be used to take Dungeness crab for commercial purposes. Any fish may be taken incidentally in crab traps being used to take Dungeness crab.

(b) Except as provided in Section 9011 or subdivision (c), any other species taken incidentally in a crab trap being used to take rock crab, shall be immediately released back to the water.

(c) The following species may be taken incidentally in crab traps being used to take rock crab under a permit issued pursuant to Section 9001 in Districts 19 and 118.5: