Fisheries and Oceans Canada supported Hoy Creek Hatchery in Coquitlam for our annual fin clip on June 23. The Coho salmon are approximately 3 months old.

The adipose fin is removed and is a soft, fleshy fin found on the top of the salmon, on the back behind the dorsal fin and just forward of the caudal fin. This marking of our coho supports:

Stock assessment for when salmon return to spawn, the clipped fins allow hatcheries and stream keepers to monitor their return. Selective fisheries - in certain regions and sub-areas, a marked fishery is permitted for the retention of the coho. The procedure also allows for a manual fish count, whereas previously only weight sample counts took place.

HSWS president, Kyle counts the fish he’s marked with a clicker, as Anne carefully clips the adipose fin.

The operation was overseen by DFO fisheries community advisor, Isaac Nelson and Hoy Creek Hatchery manager, Tyler Storgaard. Assisting Isaac from the DFO was Eric Kukulowicz. Volunteers of the Hoy/Scott Watershed Society assisted. Approximately 8,200 fish were marked.

First, the fish are anesthetized in small batches. Once in the solution, they become sleepy within minutes. The volunteers stand ready around a table equipped with a trough with flowing water and beds of water for the fish to lay in. Volunteers work quickly and very carefully to clip fins with disinfected surgical scissors before they wake up, which is within about a minute. Fish are put into the outside trough and end up in the bucket at the end of the table. They are returned to the hatchery to recover.

The fish will soon be transferred from the hatchery Capilano trough room and will live in the rearing pond until Salmon Leave Home in May 2024. Fish from this brood could then return in about 1.5–2.5 years.

HSWS director, Matt distributes anesthetized fish into trays, as Thomas and Rodney clip.

Thanks to all our Society members who helped out this year, as well as to the public to stopped in to observe and ask questions!

See more photos in our Facebook photo album.