HOW TO SELECT THE BEST FRESHWATER AQUARIUM FISH 1. COMPATIBILITY. Compatibility refers to the ability of different fish ...

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!

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 ...