California Code, Fish and Game Code - FGC § 2271

(a) No live aquatic plant or animal may be imported into this state without the prior written approval of the department pursuant to regulations adopted by the commission. A written application for the importation, submitted in conformance with the procedural requirements established by the commission, is deemed approved where it has not been denied within 60 days.

(b) This section does not apply to the following plants or animals unless the plants or animals are or may be placed in waters of the state:

(c) The section does not apply to any live aquatic plant or animal imported by a registered aquaculturist.