Photo credit: Andres Delgado (Colombia)
Review: Abdel Rahman El Gamal (Founder of the website)
The inserted picture shows the eye-tagging of shrimp broodstock. This type of marking was found tolerable by shrimp especially large adult shrimp and is not lost during molting.
Eye tags are commonly used to mark adult marine shrimp in captive broodstock populations in hatcheries and/or in genetic breeding programs. The tag is made of plastic or metal and is numbered for identifying individual shrimp. The tag ring is placed on the eyestalk behind the bulbous of the eye.