Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to keep peacock eels [title] Choose a fish tank. [step] 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.

Ending1: Don't go crazy and add too many or you could end up with exotic eels! [substeps] Peacock eels are a hardy, active fish and are drawn to small enclosed tanks. Many can live in a fully enclosed tank for ten years. Ending2: Large tanks are the easiest for peacock eels to live in because they can transport less waste and avoid the stress of hiding. [substeps] Peacock eels have a short lifespan of two to ten years depending on their age, gender, size, and species. Ending3: [substeps] 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. Ending4: [substeps] Peacock eels can be found in polluted or empty tanks. Many professional fishers recommend getting peacock eels after you have young adult eels in your tank.

Answer format: ending1/ending2/ending3/ending4