Loss of acclimation response of brook trout acclimated to three thermal regimes for 2-years and then moved to a common colder temperature

This dataset contains records of body sizes and critical thermal maximum test results of brook trout reared for 2 years under three different temperature regimes (+0 °C (the average daily water temperature of a nearby long-term study site), as well as +2 °C and +4 °C above that daily average), moved to a common colder temperature (~15 °C), and thermal tolerance measured using a critical thermal maximum test where thermal ramp rate was 2 °C per hour three, seven, 14, 21, 28, and 42 days later.