I'm well aware of what Lemons look like - both as pups & adults.
It's just Lucky?'s photos aren't clear enough to be 100% percent positive exactly which species it is. As for the 2nd Dorsal - it's hard to tell - because we don't have a good picture of it.
But the shape of caudal fin, shape of the head(in the bucket), coloration all suggest it's most likely a Lemon.