This is a list of freshwater fish living wild in the US state of Maryland.
Bowfin (Amiidae) edit
Catfishes (Ictaluridae) edit
- White catfish (Ameiurus catus)
- Yellow bullhead (Ameiurus natalis)
- Brown bullhead (Ameiurus nebulosus)
- Blue catfish (Ictalurus furcatus)
- Channel catfish (Ictalurus punctatus)
- Stonecat (Noturus flavus)
- Tadpole madtom (Noturus gyrinus)
- Margined madtom (Noturus insignis)
- Flathead catfish (Pylodictis olivaris)
Eels (Anguillidae) edit
Gars (Lepisosteidae) edit
Herrings (Clupeidae) edit
Killifishes (Fundulidae) edit
Lampreys (Petromyzontidae) edit
Lotids (Lotidae) edit
Minnows (Cyprinidae) edit
- Central stoneroller (Campostoma anomalum)
- Goldfish (Carassius auratus) (introduced)
- Koi (Cyprinus rubrofuscus) (introduced)
- Redside dace (Clinostomus elongatus)
- Rosyside dace (Clinostomus funduloides)
- Grass carp (Ctenopharyngodon idella)
- Satinfin shiner (Cyprinella analostana)
- Spotfin shiner (Cyprinella spiloptera)
- Common carp (Cyprinus carpio)
- Cutlips minnow (Exoglossum maxillingua)
- Eastern silvery minnow (Hybognathus regius)
- Striped shiner (Luxilus chrysocephalus)
- Common shiner (Luxilus cornutus)
- Allegheny pearl dace (Margariscus margarita)
- River chub (Nocomis micropogon)
- Golden shiner (Notemigonus crysoleucas)
- Comely shiner (Notropis amoenus)
- Emerald shiner (Notropis atherinoides)
- Bridle shiner (Notropis bifrenatus)
- Silverjaw minnow (Notropis buccatus)
- Ironcolor shiner (Notropis chalybaeus)
- Spottail shiner (Notropis hudsonius)
- Swallowtail shiner (Notropis procne)
- Rosyface shiner (Notropis rubellus)
- Cheat minnow (Pararhinichthys bowersi)
- Bluntnose minnow (Pimephales notatus)
- Fathead minnow (Pimephales promelas)
- Eastern blacknose dace (Rhinichthys atratulus)
- Longnose dace (Rhinichthys cataractae)
- Common rudd (Scardinius erythropthalmus) (introduced)
- Creek chub (Semotilus atromaculatus)
- Fallfish (Semotilus corporalis)
- Tench (Tinca tinca) (introduced)
Mudminnows (Umbridae) edit
Perches (Percidae) edit
- Greenside darter (Etheostoma blennioides)
- Rainbow darter (Etheostoma caeruleum)
- Fantail darter (Etheostoma flabellare)
- Swamp darter (Etheostoma fusiforme)
- Johnny darter (Etheostoma nigrum)
- Tessellated darter (Etheostoma olmstedi)
- Maryland darter (Etheostoma sellare)
- Glassy darter (Etheostoma vitreum)
- Banded darter (Etheostoma zonale)
- Yellow perch (Perca flavescens)
- Common logperch (Percina caprodes)
- Stripeback darter (Percina notogramma)
- Shield darter (Percina peltata)
- Walleye (Sander vitreum) (introduced)
Percopsids (Percopsidae) edit
Pikes (Esocidae) edit
Pirate perch (Aphredoderidae) edit
Poeciliids (Poeciliidae) edit
Pupfish (Cyprinodontidae) edit
Sculpins (Cottidae) edit
Silversides (Atherinopsidae) edit
Smelts (Osmeridae) edit
Snakeheads (Channidae) edit
- Northern snakehead (introduced)
Sticklebacks (Gasterosteidae) edit
Sturgeons (Acipenseridae) edit
Suckers (Catostomidae) edit
Sunfishes (Centrarchidae) edit
- Mud sunfish (Acantharcus pomotis)
- Rock bass (Amblopites rupestris)
- Flier (Centrarchus macropterus)
- Blackbanded sunfish (Enneacanthus chaetodon)
- Bluespotted sunfish (Enneacanthus gloriosus)
- Banded sunfish (Enneacanthus obesus)
- Redbreast sunfish (Lepomis auritus)
- Green sunfish (Lepomis cyanellus)
- Pumpkinseed (Lepomis gibbosus)
- Pumpkingill (Lepomis gibbosus x macrochirus)
- Warmouth (Lepomis gulosus)
- Bluegill (Lepomis macrochirus)
- Greengill sunfish (Lepomis macrochirus x cyanellus)
- Longear sunfish (Lepomis megalotis)
- Redear sunfish (Lepomis microlophus)
- Smallmouth bass (Micropterus dolomieu)
- Largemouth bass (Micropterus salmoides)
- White crappie (Pomoxis annularis)
- Black crappie (Pomoxis nigromaculatus)
Temperate basses (Moronidae) edit
Trout and whitefish (Salmonidae) edit
- Cutthroat trout (Oncorhynchus clarki)
- Rainbow trout (Oncorhynchus mykiss)
- Brown trout (Salmo trutta)
- Brook trout (Salvelinus fontinalis)
- Lake trout (Salvelinus namaycush)
- Lake herring (Coregonus artedi)