Yellow Perch Transfers
in Progress:

June and July 2024

Alberta Conservation Association (ACA) annually stocks over 100,000 catchable-sized (i.e., 20 cm) rainbow, brook, brown, and tiger trout into over 60 ponds each year, creating “put-and-take fisheries.” Most ACA-stocked ponds are close to urban centres, making them popular family destinations. Trout’s decreasing suitability for stocking into some of our ponds has led us to explore alternative species that may be more tolerant of lower water quality.

Why do we want to stock yellow perch?

  • Evaluation of trout survival in our stocked ponds suggests that some are not capable of supporting trout beyond mid-summer due to low dissolved oxygen and high water temperatures. Summer water temperatures can approach survival thresholds for rainbow trout and exceed the threshold of 19⁰C, where trout feeding, growth, and activity drop off significantly. Trout catches by anglers will drop off if temperatures exceed 19⁰C.
  • Yellow perch (Perca flavescens) was proposed as a candidate species for stocking that meets the criteria listed above and is native to the range that our ponds occupy.
  • Anglers have shown strong interest in stocking yellow perch to diversify angling opportunities in Alberta.

What are we proposing?

  • In 2024, we plan on transferring yellow perch into Legel Reservoir, an ACA stocked pond.
  • In addition to the perch transfers, we will continue stocking rainbow trout into this pond.

How will transfers be completed?

  • Fish transfers will occur in late June and early July 2024. Fish will be caught at donor waterbodies using fyke traps or seine and short set gill nets.
  • All fish captured will be identified individually by hand sorting to the species level. Only yellow perch will be retained for transfer, and all other non-invasive species will be returned to the donor waterbody.
  • Movement of aquatic invasive species (AIS) by ACA will be mitigated by identifying aquatic plant and animal organisms and ensuring AIS are not transferred from the donor to the recipient waterbody. Any AIS identified will be reported to the Government of Alberta.
  • At recipient ponds, fish will be immersed in a saltwater bath to control fish parasites and disease. This is standard practice in the aquaculture industry during transport. Fish will be released into recipient waterbodies by stocking tubes or by transport away from shore in a cartopper boat.

For more information, please contact [email protected]