Researchers have shown how a cave-adapted glass knifefish species of roughly 300 living members (Eigenmannia vicentespelea) has evolved from surface-dwelling relatives (Eigenmannia trilineata) that still live just outside their cave door — by sacrificing their eyes and pigmentation, but gaining slightly more powerful electric organs that enhance the way they sense prey and communicate in absolute darkness.
Click here for original story, ‘Spooky Interactions’, shocking adaptations discovered in electric fish of Brazil’s Amazon
Source: ScienceDaily