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!

Here’s what you need to know about these inflatable fish, especially the freshwater species. What Are Pufferfish? Pufferfish are a type of fish known for blowing their body up like a balloon.

Betta, or Siamese fighting, fish are among "the most popular freshwater aquarium fish in the world," PetMD reports.Native to southeast Asia, this species is known for its range of vibrant hues ...