Senior Lab Tech Eric Robillard looks on as a croaker head is opened prior to removing the otoliths.

Removing otoliths.

Examining an otolith section.

Eric opens a fish abdomen.

An otolith successfully removed.

Eric explains the growth of otolith annuli rings.

Lab Tech Roxy Torres explains fish anatomy.

Roxy demonstrates the location of otoliths in the fish head.

She's very happy with her fish.

What kind of fish is this?

 

Ageing an otolith.