Due to their size, eels require a long or large aquarium. Minimum aquarium size should be 29 gallons, but preferably 55 gallons or more. A good rule of thumb is one gallon of water for every one inch of full-grown fish. These fish prefer fine gravel or sand substrate on the bottom of the aquarium, as eels often burrow into the sand. They are predominantly secretive rock dwellers in nature so be sure your aquarium has plenty of hiding places such as large stones and rockwork. Since eels love to dig, use potted live plants to prevent uprooting.
Name: Dinosaur Bichir
Scientific Name: Polypterus senegalus
Group information: Eel
Experience Level: Advanced
Housing: Tank Size - 125 gallons
Behavior: Semi-Aggressive
Compatibility: Non-Schooling
Swim Level: Top/Middle