Depends on how fast the fish heals, when i bought one of my black volta endli it had a split tail, it had a gap between the tail, took 2-3 months for it to grow back, do alot of water change to help it heal faster.
We sort of named Checkers tongue-in-cheek. I like the cute little name. He's a killer though! But I think he's super cool. You should get one too! You don't have any small Tetras right?