WATCH: Rockfish gets glass eye after undergoing prosthetic surgery
Did you know that marine life sees fish with empty eye sockets as a sign of weakness?
That's why they pick on these creatures, which are susceptible to being harassed.
However, a refined surgical procedure at Vancouver Aquarium allows blind fish to be given prosthetic glass eyes to prevent their suffering.
In the video, a yellowtail rockfish that lost an eye socket because of cataract, is seen getting a bright yellow ocular prosthetic eye.
Vancouver aquarium head veterinarian, Dr Martin Haulena, told Seattle Times:
"Fish were picking at it."
"Its fins were tattered and it was really banged up."
Previously, aquariums would euthanise blind fish.
But thanks to the 20-minute procedure, this rockfish - which previously hid in nooks and crannies to avoid its tank mates - is back to behaving like an ordinary fish.
Sources: The Seattle Times, Metro