You ask for the ID and we think it a RCK, but if you think it's a GK then it's a GK. It's your fish, not mine. I just help out of ID'ng the fish but you already know the answer for your question.
even looks almost shortbodied rck. idk about other lopis's but mine has never had a spot and doesnt look like it will ever pop one lol. look at pics thread