The gold one is hidden amongst the others, so the first one she touches isn't it. That one does, however, invite itself to gently loop around her wrist, and as such it holds itself out of the way so the location of the gold one isn't so obscured.

His suckers intentionally latch to her interestingly-textured skin, and honestly they'd be enough to be a tactile distraction alone. But sitting here and exploring her scales by touch alone won't deal with his problem. For what it's worth, though, it feels like he genuinely means to hold on to her, as if holding her hand without getting in her way.