REVERSED ASYMMETRY. “The flatfishes are the most extreme example of behavioral and morphological lateralization in the vertebrates. Flatfish species are described as either `sinistral’ (both eyes are on the left side of the adult head) or `dextral’ (both eyes on the right side). Within a species some fish may have `reversed’ asymmetry and appear as morphological and behavioral mirror images of their siblings.”
https://lnkd.in/dxtUYFT