The punchline that never came! This meme brilliantly sets up the expectation that we'll see some wild, trippy version of the light spectrum as seen through goldfish eyes. Instead, it's literally the exact same image repeated.
It's playing with the fascinating fact that goldfish can perceive both infrared and ultraviolet light—wavelengths completely invisible to humans. Our visual spectrum runs roughly from 380-700 nanometers, while these fancy swim bois can detect from 350-800nm. Despite this superpower, the meme creator just copy-pasted the same image twice because... well, we can't actually visualize what they see!
It's the scientific equivalent of that friend who says "guess what?" and then just stares at you silently. Pure visual anti-humor that perfectly captures the frustration of being unable to experience another species' perception.