3. WATER PARAMETERS . Each fish species has specific water requirements, including pH, temperature, and hardness. Before ...

1. Water type: Archerfish are brackish water fish, meaning they need water that is a mix of freshwater and saltwater. 2. Tank size: They require a large tank, to thrive.

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 ...

A swimmer with an arapaima at an aquarium in Manaus, Native to the Amazon River Basin and large rivers of Guyana, the arapaima can grow to over 10 feet long and weigh more than 400 pounds ...

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 ...

The freshwater exhibit includes more than 5,000 fish and 50 plant species, including some that stretch over 7 feet tall. More than 1,500 reef fishes are being displayed on the saltwater side.