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How to keep peacock eels
Choose a fish tank.
Peacock eels need a decent amount of space in their tank to swim and for vegetation. They need a fairly large tank in order to thrive, so you may need to consider how many eels you want before choosing a tank.
Peacock eels do best in tanks that hold 35 gallons of water or more. A good rule of thumb is to have a tank large enough to have one gallon of water for each inch of full grown eel that will inhabit it.