The specimen fish, unofficially the second largest on record, was caught by
Welsh angler Ceri Jones in deep water near the lake's biggest island, Inishgoill.
If ratified by the Irish Specimen Fish Committee as authentic, the fish will go down as a record for Lough Corrib and rank as the largest trout caught in Ireland in 118 years.
Mr. Jones, who works as a freelance photographer with the British angling magazine Trout Fisherman, was trolling using a ‘roach deadbait’ when he hooked the fish.
“When I hooked it first, I knew instantly it was big fish. It was like hooking a car, the line just streamed off the reel.
“Using this type of big bait, you're either going to get nothing or a big fish.”
The 46-year-old, from the Rhondda Valley in South Wales, played the fish for over an hour before he managed to land it.
The trout was weighed by another angler at the water's edge at 25lbs 2oz but was later weighed at 23lbs 12oz, using a butcher's scale.
By the time he returned to Burke’s Bar in Clonbur, where he is staying, word of his prize catch had already got out and dozens of people had turned up to catch a glimpse of the fish.
Mr. Jones, who last year caught another specimen trout weighing 19lbs on Lough Corrib, admitted he is something of a fanatic when it comes to chasing big trout, coming every year to fish the same stretch of water.
He plans to have his prize fish stuffed and mounted in the bar.
The official Irish trout record, which has stood for more than a century, is held by William Mears who landed a brown trout of 26lbs 2oz from Lough Ennell in 1894.