That Roger is a regular attendee of Sanctus 1. He's the one that has produced dozens and dozens of fish, and then worked out a way to package them for a Greenbelt audience. Without him, this project wouldn't exist.
How long does it take to make a crochet fish? Roger says his production rate is around seven or eight per hour, assuming there are no distractions. If given no food, water or sleep, at that rate Roger could produce around 2,400 a fortnight. As a comparison, clownfish may produce about 300 eggs in the same period.
And from that, we can conclude the following: Roger is eight times more productive than a clownfish.