An extensive list of the freshwater fish found in California, including both native and introduced species. ^[1]

Common Name	Scientific Name	Image	Native	Non-Native	Notes
Pacific Lamprey	Lampetra tridentata		Y
River Lamprey	Lampetra ayresl		Y
Pit-Klamath Brook Lamprey	Lampetra lethophaga		Y
Klamath River Lamprey	Lampetra simiiis		Y
Kern Brook Lamprey	Lampetra hubbsi		Y
Western Brook Lamprey	Lampetra ricchardsoni		Y
White Sturgeon	Acipenser transmontanus		Y
Green Sturgeon	Acipenser medirostris		Y
American Shad	Alosa sapidissima			Y
Threadfin Shad	Dorosoma petenense			Y
Coho Salmon or Silver Salmon	Oncorhynchus kisutch		Y
Chinook Salmon or King Salmon	Oncorhynchus tshawytscha		Y
Kokanee Salmon or Sockeye Salmon	Oncorhynchus nerka		Y	Y
Pink Salmon	Oncorhynchus gorbuscha		Y
Chum Salmon	Oncorhynchus keta		Y
Rainbow Trout	Oncorhynchus mykiss		Y
Coastal Rainbow Trout or Steelhead Trout	Oncorhyncus mykiss irideus		Y
California Golden Trout	Oncorhynchus mykiss aguabonita		Y
Little Kern Golden Trout	Oncorhynchus mykiss whitel		Y
Kern River Rainbow Trout	Oncorhynchus mykiss gilberti		Y
Sacramento Redband Trout	Oncorhynchus mykiss stonei		Y
Eagle Lake Rainbow Trout	Oncorhynchus mykiss aquilarum		Y
Cutthroat Trout	Oncorhynchus clarkii		Y
Coastal Cutthroat Trout	Oncorhynchus clarkii clarkii		Y
Lahontan Cutthroat Trout	Oncorhynchus clarkii henshawl		Y
Paiute Cutthroat Trout	Oncorhynchus clarkii seleniris		Y
Bull Trout	Salvelinus confluentus		Y
Brook Trout	Salvelinus fontinalls			Y
Brown Trout	Salmo trutta			Y
Lake Trout or Mackinaw Trout	Salvelinus namaycush			Y
Mountain Whitefish	Prosoplum williamsoni		Y
Delta Smelt	Hypomesus transpacificus		Y
Wakasagi	Hypomesus nipponensis			Y
Longfin Smelt	Spirinchus thalechthys		Y
Eulachon	Thaleichthys pacificus		Y
California Roach	Lavinia symmetricus		Y
Hitch	Lavinia exilicauda		Y
Lahontan Redside	Richarsonius egregius		Y
Speckled Dace	Rhinichthys osculus		Y
Tui Chub	Siphateles bicolor		Y
Mojave Tui Chub	Siphateles bicolor mohavensis		Y
Owens Tui Chub	Siphateles bicolor snyderi		Y
Blue Chub	Gila coerulea		Y
Arroyo Chub	Gila orcutti		Y
Thicktail Chub	Gila crassicauda		Y
Bonytail	Gila elegans		Y
Sacramento Splittail	Pogonichthys macrolepidotus		Y
Clear Lake Splittail	Pogonichthys ciscoldes		Y
Hardhead	Mylopharodon conocephalus		Y
Sacramento Blackfish	Orthodon microlepidotus		Y
Sacramento Pikeminnow	Ptychochellus grandis		Y
Colorado Pikeminnow	Ptychochellus luclus		Y
Common Carp	Cyprinus carpio			Y
Goldfish	Carassius auratus			Y
Golden Shiner	Notemigonus crysoleucas			Y
Red Shiner	Cyprinella lutrensis			Y
Fathead Minnow	Pimephales promelas			Y
Tench	Tinca tinca			Y
Grass Carp	Ctenopharyngodon idella			Y
Sacramento Sucker	Catostomus occidentalls		Y
Goose Lake Sucker	Catostomus occidentalis lacusanserinus		Y
Tahoe Sucker	Catostomus tahoensis		Y
Owens Sucker	Catostomus fumelventris		Y
Lost River Sucker	Catostomus luxatus		Y
Klamath Largescale Sucker	Catostomus snyderi		Y
Klamath Smallscale Sucker	Catostomus rimiculus		Y
Modoc Sucker	Catostomus microps		Y
Santa Ana Sucker	Catostomus santaanae		Y
Razorback Sucker	Xyrauchen texanus		Y
Shortnose Sucker	Chasmistes brevirostris		Y
Brown Bullhead	Amelurus nebulosus			Y
Mountain Sucker	Catostomus platyrhynchus		Y
Black Bullhead	Amelurus melas			Y
Yellow Bullhead	Amelurus natalls			Y
Channel Catfish	Ictalurus puctatus			Y
Blue Catfish	Ictalurus furcatus			Y
White Catfish	Ameriurus catus			Y
Flathead Catfish	Plyodictis olivaris			Y
Amargosa Pupfish	Cyprinodon nevadensis		Y
Desert Pupfish	Cyprinodon macularius		Y
Salt Creek Pupfish	Cyprinodon salinus		Y
Owens Pupfish	Cyprinodon radiosus		Y
California Killifish	Fundulus parvipinnis		Y
Rainwater Killifish	Lucania parva			Y
Western Mosquitofish	Gambusia affinis			Y
Sailfin Molly	Poecilla latipinna			Y
Porthole Livebearer	Poecillopsis gracilis			Y
Inland Silverside	Menidia beryllina			Y
Threespine Stickleback	Gasterosteus aculeatus		Y
Brook Stickleback	Culaea inconstans			Y
Striped Bass	Morone saxatilis			Y
White Bass	Morone chrysops			Y
Sacramento Perch	Archoplites interruptus		Y
Bluegill	Lepomis macrochirus			Y
Redear Sunfish	Lepomis microlophus			Y
Pumpkinseed	Lepomis gibbosus			Y
Green Sunfish	Lepomis cyanellus			Y
Warmouth	Lepomis gulosus			Y
White Crappie	Pomoxis annularis			Y
Black Crappie	Pomoxis nigromaculatus			Y
Largemouth Bass	Micropterus salmoides			Y
Smallmouth Bass	Micropterus dolomieu			Y
Spotted Bass	Micropterus punctulatus			Y
Redeye Bass	Micropterus coosae			Y
Yellow Perch	Perca flavescens			Y
Bigscale Logperch	Percina macrolepida			Y
Mozambique Tilapia	Oreochromis mossambicus			Y
Redbelly Tilapia	Tilapia zillii			Y
Blue Tilapia	Oreochromis aureus			Y
Nile Tilapia	Oreochromis niloticus			Y
Tuleperch	Hysterocarpus traski		Y
Shiner Perch	Cymatogaster aggregata		Y
Striped Mullet	Mugil cephalus		Y
Yellowfin Goby	Acanthogoblus flavimanus			Y
Shimofuri Goby	Tridentiger bifasclatus			Y
Tidewater Goby	Eucyclogoblus newberryi		Y
Prickly Sculpin	Cottus asper		Y
Riffle Sculpin	Cottus gulosus		Y
Pit Sculpin	Cottus pitensis		Y
Coastrange Sculpin	Cottus aleuticus		Y
Reticulate Sculpin	Cottus perplexus		Y
Marbled Sculpin	Cottus klamathensis		Y
Rough Sculpin	Cottus asperrimus		Y
Paiute Sculpin	Cottus beldingi		Y
Pacific Staghorn Sculpin	Leptocottus armatus		Y
Starry Flounder	Platichthys stellatus		Y
Northern Pike	Esox lucius			Y

References