One Fish, Two Fish, Red Fish, Goldfish: The Bubble Eye

 

As its name implies, the bubble eye goldfish’s eyes look like giant bubbles. Of course, its eyes are normal and they are able to see (although they are pointed upwards). The sacks under the eyes gives them this unique appearance. These fluid-filled bags actually give the fish a disadvantage when using its sense of sight, despite how big its eyes may look. Although entertaining to observe, these pouches can be a burden in several other ways, beyond the challenges to its vision.