Fish Species currently or historically present in streams of the Napa River basin

# Common Name Scientific Name Origin Family Status Recent Source Original Source 1 White Sturgeon Acipenser transmontanus Native Acipenseridae present Anglers 2 Sacramento Sucker Catostomus occidentalis Native Catostomidae present RCD 3 Sacramento Perch Archoplites interruptus Native Centrarchidae extirpated Moyle 4 Pacific Herring Clupea pallasii Native Clupeidae present Stillwater 5 Northern Anchovy Engraulis mordax Native Clupeidae present Stillwater 6 Riffle Sculpin Cottus gulosus Native Cottidae present RCD 7 Coastrange Sculpin Cottus aleuticus Native Cottidae present Leidy 8 Prickly Sculpin Cottus asper Native Cottidae present RCD 9 Pacific Staghorn Sculpin Leptocottus armatus Native Cottidae present Stillwater 10 Sacramento Pikeminnow Ptychocheilus grandis Native Cyprinidae present RCD 11 Thicktail Chub Gila crassicauda Native Cyprinidae extinct Moyle 12 Hitch Lavinia exilicauda Native Cyprinidae present Leidy 13 Sacramento Blackfish Orthodon microlepidotus Native Cyprinidae present Leidy 14 California Roach Hesperoleucus symmetricus Native Cyprinidae present RCD 15 Hardhead Mylopharodon conocephalus Native Cyprinidae present Leidy, RCD 16 Sacramento Splittail Pogonichthys macrolepidotus Native Cyprinidae present Stillwater 17 Shiner Perch Cymatogaster aggregata Native Embiotocidae present? Leidy 18 Tule Perch Hysterocarpus traski Native Embiotocidae present RCD 19 Three-spine Stickleback Gasterosteus aculeatus Native Gasterosteidae present RCD 20 Bay Goby Lepidogobius lepidus Native Gobiidae present Stillwater 21 Longjaw Mudsucker Gillichthys mirabili Native Gobiidae present Stillwater 22 Tidewater Goby Eucyclogobius newberryi Native Gobiidae likely extirpated Leidy 23 Arrow Goby Clevelandia ios Native Gobiidae present Stillwater 24 Delta Smelt Hypomesus transpacificus Native Osmeridae present Stillwater 25 Jack Smelt Atherinopsis californiensis Native Osmeridae present Stillwater 26 Longfin Smelt Spirinchus thaleichthys Native Osmeridae present Stillwater 27 Pacific Lamprey Lampetra tridentata Native Petromyzontidae present RCD 28 River Lamprey Lampetra ayresi Native Petromyzontidae present Leidy, RCD 29 Speckled Sanddab Citharichthys stigmaeus Native Pleuronectidae present Stillwater 30 Starry Flounder Platichthys stellatus Native Pleuronectidae present Stillwater 31 Steelhead / Rainbow Trout Oncorhynchus mykiss Native Salmonidae present RCD 32 Chinook Salmon Oncorhynchus tshawytscha Native Salmonidae present RCD 33 Coho Salmon Oncorhynchus kisutch Native Salmonidae extirpated CDFG 34 Chum Salmon Oncorhynchus keta Native Salmonidae status unknown Stillwater

1 Inland Silverside Menidia beryllina Exotic Atherinidae present Stillwater 2 Smallmouth Bass Micropterus dolomieui Exotic Centrarchidae present RCD 3 Bluegill Lepomis macrochirus Exotic Centrarchidae present RCD 4 Redear Sunfish Lepomis microlophus Exotic Centrarchidae present Leidy 5 Green Sunfish Lepomis cyanellus Exotic Centrarchidae present RCD 6 Largemouth Bass Micropterus salmoides Exotic Centrarchidae present RCD 7 Black Crappie Pomoxis nigromaculatus Exotic Centrarchidae present Stillwater 8 White Crappie Pomoxis annularis Exotic Centrarchidae present Stillwater 9 Threadfin Shad Dorosoma petenense Exotic Clupeidae present Stillwater 10 American Shad* Alosa sapidissima Exotic Clupeidae present Stillwater 11 Common Carp Cyprinus carpio Exotic Cyprinidae present Stillwater, RCD 12 Goldfish Carassius auratus Exotic Cyprinidae present 13 Golden Shiner Notemigonus crysoleucas Exotic Cyprinidae present Stillwater 14 Rainwater Killifish Lucania parva Exotic Fundulidae present Stillwater, RCD 15 Shimofuri Goby Tridentiger bifasciatus Exotic Gobiidae present Stillwater 16 Yellowfin Goby Acanthogobius flavimanus Exotic Gobiidae present Stillwater 17 Brown Bullhead Ameiurus nebulosus Exotic Ictaluridae present Leidy 18 Black Bullhead Ameiurus melas Exotic Ictaluridae present Leidy 19 White Catfish Ameiurus catus Exotic Ictaluridae present Stillwater 20 Channel Catfish Ictalurus punctatus Exotic Ictaluridae present Stillwater 21 Wakasagi Hypomesus nipponensis Exotic Osmeridae present Stillwater 22 Striped Bass Morone saxatilis Exotic Percichthyidae present Stillwater, RCD 23 Western Mosquitofish Gambusia affinis Exotic Poeciliidae present Stillwater, RCD 24 Brown Trout Salmo trutta Exotic Salmonidae status unknown Leidy

Compiled by J. Koehler (Napa County RCD), March 2007 Sources: Stillwater Sciences 2002 Limiting Factors Analysis , Stillwater Sciences 2006 Napa River Fisheries Monitoring Program , information derived from CDFG surveys, J. Koehler personal experience, R. Leidy 1997, P. Moyle 2002. NAPA RIVER BASIN FISH COMMUNITY ESTUARY VALLEY FLOOR FOOTHILLSDRAFT HEADWATERS 3-2007

Steelhead* Pacific Lamprey River Lamprey Chinook Salmon Native Coho Salmon Extirpated from basin Anadromous Chum Salmon Recently captured in Napa River estuary - status unknown Rainbow Trout* Riffle Sculpin Sacramento Sucker Sacramento Pikeminnow California Roach Hardhead Tule Perch Sacramento Blackfish Abundant in Lake Hennessey - status unknown elsewhere Hitch Thicktail Chub Extinct Sacramento Perch Extirpated from basin Prickly Sculpin Three-spine Stickleback Coastrange Sculpin Sacramento Splittail

Native Shiner Perch LEGEND White Sturgeon : Typical Range Pacific Staghorn Sculpin : Occasional Range Pacific Herring : Former Range Northern Anchovy Delta Smelt Tidewater Goby Extirpated from San Francisco Bay Bay Goby Longjaw Mudsucker Arrow Goby > 5% Jack Smelt Longfin Smelt

Speckled Sanddab 2 - 5%

Starry Flounder J. Koehler (NCRCD) March 2007 Sources: Tidal < 2% Stillwater Sciences Limiting Factors Analysis 2002 Napa River Fisheries Monitoring 2006 CDFG , NCRCD surveys * Steelhead and rainbow trout are the same species - steelhead are migratory and trout are resident. Leidey 1997, Moyle 2002 NAPA RIVER BASIN FISH COMMUNITY ESTUARY VALLEY FLOOR FOOTHILLSDRAFT HEADWATERS 3-2007

Smallmouth Bass Brown Trout status unknown - likely not present Bluegill Green Sunfish Redear Sunfish Western Mosquitofish Largemouth Bass Common Carp White Catfish Channel Catfish Black Bullhead Brown Bullhead LEGEND Black Crappie : Typical Range White Crappie : Occasional Range Non-Native Goldfish : Former Range Golden Shiner Striped Bass Threadfin Shad American Shad Inland Silverside > 5% Rainwater Killifish Wakasagi Shimofuri Goby Yellowfin Goby 2 - 5%

Tidal < 2%

J. Koehler (NCRCD) March 2007 Sources: Stillwater Sciences Limiting Factors Analysis 2002 Napa River Fisheries Monitoring 2006 CDFG , NCRCD surveys Leidey 1997, Moyle 2002 NAPA RIVER BASIN FISH COMMUNITY

Hydrogeomorphic Class Description Native Non-Native Total

Tidal areas from brackish ESTUARY waters of the bay to Trancas 26 21 47 St.

Mainstem Napa River and VALLEY FLOOR lower reaches of large 14 14 28 tributaries

Middle reaches in tributary FOOTHILLS 12 4 16 streams (2-5% slope)

Upper reaches in tributary HEADWATERS 505 streams (>5% slope)

Compiled by J. Koehler (Napa County RCD), March 2007 Sources: Stillwater Sciences 2002 Limiting Factors Analysis , Stillwater Sciences 2006 Napa River Fisheries Monitoring Program , information derived from CDFG surveys, J. Koehler personal experience, R. Leidy 1997, P. Moyle 2002.

Values represent the total number of known species occurring in each of four major riverine classes. For example, a foothill stream may support as many as 16 species (12 native and 4 exotic).

There are 29 native fish species present in the basin. Additionally the Napa River historically supported thicktail chub (extinct), Sacramento perch (extirpated), coho salmon (extirpated), and chum salmon have recently been caught (status is unknown). A total of 14 native species are known to occur in the valley floor and upstream.

There are 22 non-native fish species known to occur in the basin. American shad (Alosa sapidissima) has been captured in the estuary on a couple of occasions but likely does not regularly occur in the river. Brown Trout were captured in 1997 (Leidy), but they have not been documented by recent efforts and likely do not occur or are very uncommon. A total of 14 non-native species occur in the valley and upstream. No non-native fish species occur in high gradient mountain streams.

Reservoirs within the Napa River basin contain additional fish species, which are planted for sportfishing or other reasons. These species may occasionally colonize tributary streams or be washed downstream and become temporarily established in suitable stream habitats. Fish Communities 30 of the 26 Napa River Basin

25

Native 21 Non-Native 20

15 14 14 12

Number of Fish Species 10

5 5 4

0 0 ESTUARY VALLEY FLOOR FOOTHILLS HEADWATERS