Without a pic, don't think we can be for sure, but I have caught reds without the spot. I have caught everything from no spots to one spot (only on one side) to up to 12 spots. The 12 spot was in a tourny and they had a prize for the most spots, and I lost by 1.
I also don't know of a fish that looks like a red that will get that big.
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"The sure way to get a bite while fishing is to talk about changing spots"