Knowledgebase What would you like to Ask Marine? Home / Select Species / Other Finfish Select Species Clams Dungeness crab Groundfish Invertebrate fishing gear Kelp and Algae Miscellaneous invertebrates Other Finfish Pacific halibut Red abalone Rock crabs Salmon Shrimp, Prawns Spiny lobster Sharks Other Finfish Questions and answers for general finfish In this section What are the predicted times for grunion runs on certain beaches? Is the run usually once a month? How long do grunion runs last?