Nice Koi!!! I have the same one...kinda sux when you see someone else with the same tat...but I guess that's what you get for picking one out from the shop lmao
I,ve just had a very similar Koi inked on my upper arm by Colte of Rockhampton Tattoo Queensland and what a top job. Your Koi is excellent and it matters not that some one else is wearing the same, we all have good taste as well as the good luck Koi brings with it.