Whether you’re an experienced aquarium keeper or a total novice, one of the first decisions about any freshwater setup will be about the types of aquarium fish you select. Thankfully, this list will ...

Molly sizes are never huge, but they're larger than you might expect from a small tropical fish you buy at a pet store. Larger breeds like sailfin mollies, due to their long body and large dorsal ...

A study by the Environmental Working Group (EWG) has identified high levels of “forever chemicals” in freshwater fish consumed in the United States (U.S.). Per- and polyfluoroalkyl substances (PFAS) ...

More than 90% of popular freshwater fish in Southern California are carrying human-infecting parasites, researchers say. This poses a significant danger for those who like to eat freshly caught ...

These are the prettiest freshwater fish, from vibrant brook trout and pumpkinseed sunfish to majestic lake sturgeon. Check out how these species made our list!

Decapods have the highest percentage of species threatened at 30%, while 26% of freshwater fish and 16% of odonates are threatened, according to the analysis. Nearly 90 freshwater species have ...

Few freshwater fish can match the size of the Mekong giant catfish, which can exceed 10 feet and weigh over 660 pounds. Native to the Mekong River, this gentle giant feeds on plankton rather than ...

For years, Heinz Machacek has kept records of big freshwater fish on his website. Here are some of the largest freshwater fish that swim. Print Subscription-$35 for the Best Field & Stream Stories ...