Quick answer: Every species below carries its own season, bag limit and size limit, and most of them change between California's six management regions. Pick one for the numbers that apply where you fish. Creel carries all 39 species; these are the ones people look up most.
SpeciesOpen inSize limit
Rockfish 5 of 6 regions All Rockfish: No minimum size limit Cabezon and Greenlings: No minimum size limit
Lingcod 5 of 6 regions 22" total length
California Halibut 6 of 6 regions 22-inch minimum
Spiny Lobster 0 of 1 regions No minimum
Dungeness Crab 0 of 5 regions No minimum
Ocean Salmon 2 of 6 regions 20-inch minimum
White Seabass 4 of 4 regions 28-inch minimum
Yellowtail 1 of 1 regions 24-inch minimum
Surfperch 6 of 6 regions 10½-inch minimum
Red Abalone 0 of 6 regions No minimum
California Scorpionfish (Sculpin) 5 of 5 regions No minimum
Kelp Bass & Sand Bass 1 of 1 regions 14-inch minimum
Leopard Shark 6 of 6 regions 36-inch minimum

Why "no minimum size" is not the same as "no limit"

Rockfish, cabezon and greenlings have no minimum size anywhere in California. That does not make them unregulated — they are controlled by a 10-fish aggregate across the whole complex, with hard sub-limits inside it: one copper, two canary, four vermilion in the Northern Management Area and two everywhere else. Ten fish is legal; ten fish that happen to include two coppers is not.

Every California size and bag limit in one table →