world record rainbow trout

World Record Rainbow Trout

The world record rainbow trout title belongs to Canadian fisher Sean Konrad. The International Game Fish Association’s (IGFA) record book now lists his 48-pound, 42-inch catch as the biggest ever rainbow trout specimen – a true world record trout.

Here at Fly Fisher Pro we have a number of fly rod reviews and we even break down in detail the fly fishing basics in order to understand how to fish for trout. As always if you have any questions, leave them in the box below.

Where was the biggest rainbow trout caught? 

The world record rainbow trout was caught in Lake Diefenbaker, Saskatchewan, in Canada. The lake covers 110,000 acres and is an impoundment of the two rivers: Qu’Appelle and South Saskatchewan. This is was the location of the previous world record, held by Sean’s twin brother, Adam, in 2007. Lake Diefenbaker has been the centre of controversy over the record, as triploid trout seem to have escaped from a nearby farm and populate the waters, often reaching 30+ pounds. The previous record and the current record holder seem both to have been triploids.

Catching the largest rainbow trout

The alltackle world record steelhead was caught on September 5th, 2009 with a spinning rod. The fisher, Sean Konrad, is part of a dynasty of world record holders, together with Adam his brother and previous record holder. The two full-time auto-mechanics are also fishing guides and have managed to help clients catch fish in the world record space as well.  The world record rainbow trout had a girth of 32 inches – the wide body being a distinguishing mark of triploid trout. Big trouts that are not from genetically modified stock tend to get both longer and wider, but the record holder held a lot of weight around his midsection. 

world record rainbow trout
Via Field & Stream

What is a triploid trout?

While “triploid fish” is usually just a term that means that they are sterile, the name comes from the reason why these trout are sterile. Triploid trout are a modified form of a species that has not two, but three chromosomes. The additional chromosome makes the fish infertile, diverting the resources that the fish would have invested into reproduction into growth. These fish tend to have a typical football-shape, as the muscles around their midsection bulge because of the added protein generation. The fish are not “genetically modified” in the stricter sense, given that the process of creating sterile triploids involves some minor tampering of the breeding process and by that the cell division. The fish grow up just like normal trout, they are just a bit chunkier, on average.  Other examples of triploids are commercially available bananas and seedless watermelon. These species would not be able to multiply in the wild, dying after one generation. 

Runners-up: almost the biggest 

Sean Konrad AGAIN, with a 37 pounds, 4 ounces ‘bow – currently the IGFA 16lb line class world record. The video shows what an expert Sean is as he calmly handles the behemoth. 

huge rainbow
Via Wide Open Spaces

Here are some of the Konrads’ other catches:

The previous 43 pound record holder that Adam caught. 

biggest steelhead
Via Field & Stream

Another 40 pound Diefenbaker monster. 

And a gigantic pike they caught a long time ago. 

pike huge record
Via Field & Stream

About The Author

1 thought on “World Record Rainbow Trout”

  1. Big fish! Anyway i came from your giveaway site. I have put my email in like the usuals but i have not yet recieved any confirmation email. I have followed your youtube account. Is there still any chance for participation? Because i am yet waiting for my entry. It is currently still 0.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top