Karatepig
Aquarium Advice Activist
"Peacock eels" are actually a type of bichir. The Senegal Bichir (Polypterus senegalus). A lot of people recommend no less than a 70g for this bichir and as far as I'm aware, this is the smallest type of bichir/"eel". It might work out until 8"-10" but after then he'll most likely need rehoming.