California Code, Fish and Game Code - FGC § 8389

(a) Herring eggs may only be taken for commercial purposes under a revocable, nontransferable permit subject to such regulations as the commission shall prescribe. In addition to the license fees provided for in this code, every person taking herring eggs under this section shall pay a royalty, as the commission may prescribe, of not less than fifty dollars ($50) per ton of herring eggs taken.

(b) Whenever necessary to prevent overutilization, to ensure efficient and economic operation of the fishery, or to otherwise carry out this article, the commission may limit the number of permits which are issued and the amount of herring eggs taken under those permits.

(c) In limiting the number of permits, the commission shall take into consideration any restriction of the fishing area and the safety of others who, for purposes other than fishing, use the waters from which herring eggs are taken.

(d) Every person operating under a permit issued pursuant to this section is excepted from the provisions of Chapter 6 (commencing with Section 6650) of Part 1 of Division 6 for aquatic plants taken incidental to the harvest of herring eggs.