Date Species New Area: 11/1/04 white perch Morone americana County: Creek/Osage (OK) Drainage: Black Bear-Red Rock (11060006) 10/28/04 ruffe Gymnocephalus cernuus County: Marquette (MI) 10/22/04 freshwater bryozoan Pectinatella magnifica State: NJ County: Middlesex (NJ) Drainage: Raritan (2030105) 10/22/04 Cuban treefrog Osteopilus septentrionalis State: GA County: Chatham (GA) Drainage: Lower Savannah (3060109) 10/21/04 Charru mussel Mytella charruana County: Volusia (FL) Drainage: Cape Canaveral (3080202) 10/21/04 bighead carp Hypophthalmichthys nobilis County: Davis (IA) 10/21/04 bighead carp Hypophthalmichthys nobilis County: Union (IA) Drainage: Platte (10240012) 10/15/04 a tunicate Didemnum cf. lahillei State: WA County: Snohomish (WA) Drainage: Puget Sound (17110019) 10/13/04 northern snakehead Channa argus State: IL County: Cook (IL) Drainage: Chicago (7120003) 10/12/04 spiny water flea Bythotrephes cederstroemii County: Cook (MN) Drainage: Baptism-Brule (4010101) 10/12/04 round goby Neogobius melanostomus Drainage: Lower Illinois-Senachwine Lake (7130001) 10/6/04 zebra mussel Dreissena polymorpha Drainage: Indian (4150303) 10/6/04 New Zealand mudsnail Potamopyrgus antipodarum County: San Joaquin (CA) Drainage: Lower Cosumnes-Lower Mokelumne (18040005) 10/6/04 New Zealand mudsnail Potamopyrgus antipodarum Drainage: San Joaquin Delta (18040003) 10/6/04 New Zealand mudsnail Potamopyrgus antipodarum County: Solano/Napa (CA) Drainage: San Pablo Bay (18050002) 10/5/04 Chinese mitten crab Eriocheir sinensis State: QUE Drainage: St. Lawrence (4150300) 10/5/04 banded mystery snail Viviparus georgianus Drainage: Pine (7010105) 10/5/04 banded mystery snail Viviparus georgianus Drainage: Long Prairie (7010108) 10/5/04 water flea Daphnia lumholtzi County: Santa Clara (CA) Drainage: Coyote (18050003) 9/16/04 jaguar guapote Cichlasoma managuense State: LA County: E. Baton Rouge (LA) Drainage: Amite (8070202) 9/10/04 ruffe Gymnocephalus cernuus Drainage: Fishdam-Sturgeon (4030112) 9/8/04 spiny water flea Bythotrephes cederstroemii County: Cattaraugus (NY) Drainage: Upper Allegheny (5010001) 9/8/04 freshwater jellyfish Craspedacusta sowerbyii County: Ouachita (LA) Drainage: Lower Ouachita (8040207) 8/30/04 flathead catfish Pylodictis olivaris State: NJ Drainage: Raritan (2030105) 8/25/04 white perch Morone americana State: IA County: Fremont (IA) Drainage: Keg-Weeping Water (10240001) 8/16/04 harlequin; Butterfinger nudibranch Polycera chilluna State: NC 8/16/04 arawana Osteoglossum bicirrhosum State: CO County: Denver (CO) Drainage: Middle South Platte-Cherry Creek (10190003) 8/16/04 pirapatinga, red-bellied pacu Piaractus brachypomus County: Harrison (MS) Drainage: Mississippi Coastal (3170009) 8/16/04 pirapatinga, red-bellied pacu Piaractus brachypomus County: Jackson (MS) Drainage: Pascagoula (3170006) 8/16/04 bighead carp Hypophthalmichthys nobilis County: Arapahoe (CO) Drainage: Middle South Platte-Cherry Creek (10190003) 8/12/04 zebra mussel Dreissena polymorpha County: Reno (KS) Drainage: North Fork Ninnescah (11030014) 8/11/04 Cuban treefrog Osteopilus septentrionalis County: Duval (FL) Drainage: Lower St. Johns (3080103) 8/11/04 Cuban treefrog Osteopilus septentrionalis County: Columbia (FL) Drainage: Santa Fe (3110206) 8/4/04 rudd Scardinius erythrophthalmus County: Zapata (TX) Drainage: International Falcon Reservoir (13080003) 8/4/04 northern snakehead Channa argus County: Middlesex (MA) Drainage: Merrimack (1070002) 7/29/04 round goby Neogobius melanostomus Drainage: Lower Grand (4050006) 7/28/04 zebra mussel Dreissena polymorpha County: Kay (OK) Drainage: Kaw Lake (11060001) 7/27/04 silver carp Hypophthalmichthys molitrix County: Lincoln (SD) Drainage: Lower Big Sioux (10170203) 7/27/04 alewife Alosa pseudoharengus County: Grand Isle (VT) Drainage: Lamoille (2010005) 7/23/04 northern snakehead Channa argus State: PA County: Philadelphia (PA) Drainage: Schuylkill (2040203) 7/23/04 bullseye snakehead Channa marulius County: Lee (FL) Drainage: Big Cypress Swamp (3090204) 7/15/04 round goby Neogobius melanostomus Drainage: Lake Huron (4080300) 7/9/04 round goby Neogobius melanostomus Drainage: Lower Illinois-Lake Chautauqua (7130003) 7/9/04 round goby Neogobius melanostomus County: Grand Traverse (MI) 6/29/04 threespine stickleback Gasterosteus aculeatus County: Alger (MI) 6/28/04 northern snakehead Channa argus County: Charles (MD) Drainage: Lower Potomac (2070011) 6/28/04 ruffe Gymnocephalus cernuus Drainage: Southwestern Lake Superior (4010300) 6/24/04 channeled applesnail Pomacea canaliculata County: Seminole (FL) Drainage: Upper St. Johns (3080101) 6/15/04 black carp Mylopharyngodon piceus County: Calhoun (IL) Drainage: The Sny (7110004) 6/14/04 American alligator Alligator mississippiensis State: PA Drainage: Lower Allegheny (5010009) 6/9/04 bighead carp Hypophthalmichthys nobilis County: Mississippi (AR) 6/8/04 bighead carp Hypophthalmichthys nobilis County: Fulton (IL) 5/17/04 African clawed frog Xenopus laevis County: San Francisco (CA) 5/17/04 red-eared slider Trachemys scripta elegans County: Marin (CA) 5/17/04 snapping turtle Chelydra serpentina County: Marin (CA) 5/17/04 spiny softshell Apalone spinifera County: Marin (CA) 5/17/04 red-eared slider Trachemys scripta elegans County: Marin (CA) 5/17/04 northern snakehead Channa argus County: Fairfax (VA) 5/14/04 northern snakehead Channa argus County: Montgomery (MD) 5/14/04 northern snakehead Channa argus County: Charles (MD) 5/14/04 crayfish Orconectes neglectus neglectus State: AK

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