As a yearling the colt was put up for auction at Doncaster and was bought for 3,000 guineas by George Lambton, acting on behalf of Aga Khan III.
[5][7] Salmon-Trout made his first appearance in the five furlong Prendergast Stakes at Newmarket Racecourse on 18 October and "scrambled home" from Windward and St Germans.
[8] At the end of the year Salmon-Trout was rated one of the Aga Khan's most promising juveniles,[10] and in the official Free Handicap he was ranked third behind his stablemates Mumtaz Mahal and Diophon.
Salmon-Trout, who was regarded as the Aga Khan's second string behind the 2000 Guineas winner Diophon was never in contention and finished sixth behind Sansovino who won easily from St Germans and Hurstwood.
[15] On his first appearance after his poor run in the Derby, Salmon-Trout contested the Princess of Wales's Stakes over 1+1⁄2 miles on 3 July at Newmarket in which he was ridden by Vic Smyth and started at odds of 5/1.
[19] In the 149th running of the St Leger over 14+1⁄2 furlongs at Doncaster Racecourse on 10 September, Salmon-Trout was ridden by the Australian Bernard "Brownie" Carslake and started at odds of 6/1 in a field of seventeen runners.
[20] Salmon-Trout was restrained at the rear of the field by Carslake and looked to have no chance of winning a furlong out as Santorb challenged the favourite Polyphontes for the lead.
[23] On his final appearance of the season, Salmon-Trout finished third behind the four-year-olds Pharos and Parth in the Champion Stakes over ten furlongs at Newmarket in October.