Montgomery County is home to more than 60 species of freshwater fish, representing nearly every family of fish known in Maryland. This includes trout (family: Salmonidae), catfishes (family: Ictaluridae), sunfishes and bass (family: Centrarchidae), minnows (family: Cyprinidae), suckers (family: Catostomatidae), sculpins (family: Cottidae), darters and yellow perch (family: Percidae), killifishes (family: Fundulidae), lampreys (family: Petromyzontidae), American Eel (family: Anguillidae), Eastern mudminnow (family: Umbridae), Eastern mosquitofish (family: Poeciliidae).To obtain Montgomery County fish data, please send a request through AskDEP. For distribution maps of fishes in Maryland, please visit the Maryland Department of Natural Resources, Maryland Biological Stream Survey Fish Distribution Page.