Western Mosquitofish
Gambusia affinis
About This Fish

The Western Mosquitofish is widespread across Gulf Coast drainages from Mexico to Alabama, including the Mississippi River Drainage north to Illinois. They have been widely introduced worldwide, causing the loss of many native fish species. Western Mosquitofish live in slow water in pools, springs, lakes, and backwaters of streams. They have internal fertilization and give birth to live young.

Conasauga – 03150101, Coosawattee – 03150102, Oostanaula – 03150103, Etowah – 03150104, Upper Coosa – 03150105, Middle Coosa – 03150106, Lower Coosa – 03150107, Upper Tallapoosa – 03150108, Middle Tallapoosa – 03150109, Lower Tallapoosa – 03150110, Upper Alabama – 03150201, Cahaba – 03150202, Middle Alabama – 03150203, Lower Alabama – 03150204, Upper Tombigbee – 03160101, Town – 03160102, Buttahatchee – 03160103, Tibbee – 03160104, Luxapallila – 03160105, Middle Tombigbee-Lubbub – 03160106, Sipsey – 03160107, Noxubee – 03160108, Mulberry – 03160109, Sipsey Fork – 03160110, Locust – 03160111, Upper Black Warrior – 03160112, Lower Black Warrior – 03160113, Middle Tombigbee-Chickasaw – 03160201, Sucarnoochee – 03160202, Lower Tombigbee – 03160203, Upper Cumberland – 05130101, Upper Cumberland-Lake Cumberland – 05130103, Upper Cumberland-Cordell Hull Reservior – 05130106, Collins – 05130107, Caney – 05130108, Lower Cumberland-Old Hickory Lake – 05130201, Lower Cumberland-Sycamore – 05130202, Stones – 05130203, Harpeth – 05130204, Lower Cumberland – 05130205, Red – 05130206, Watauga, North Carolina, Tennessee – 06010103, Holston – 06010104, Pigeon – 06010106, Lower French Board – 06010107, Nolichucky – 06010108, Watts Bar Lake – 06010201, Lower Little Tennessee – 06010204, Upper Clinch, Tennessee, Virginia – 06010205, Lower Clinch – 06010207, Emory – 06010208, Middle Tennessee-Chickamauga – 06020001, Hiwassee – 06020002, Ocoee – 06020003, Sequatchie – 06020004, Guntersville Lake – 06030001, Wheeler Lake – 06030002, Upper Elk – 06030003, Lower Elk – 06030004, Pickwick Lake – 06030005, Bear – 06030006, Lower Tennessee-Beech – 06040001, Upper Duck – 06040002, Lower Duck – 06040003, Buffalo – 06040004, Kentucky Lake – 06040005, Lower Tennessee – 06040006