✨🏠 7/ The take home? When specific climate metrics and fish age are taken into account, clearer patterns emerge for predicting long-term changes. This research can help ecologists, natural resource managers, and policymakers plan for the future.

🌎⚠️ 6/ Why does it matter? Continued body size declines in fishes, especially in the youngest and oldest individuals, could spell trouble for biodiversity and ecosystem functions and services.

🔎📊 5/ These finds show that mixed growth responses to climate change in previous research may be related to age-specific effects and/or the specific climate variable(s) being used. This work suggests that climate change effects on fish body size might be more predictable than previously thought.

❄️ 🥵 4/ For cold- and cool-water adpated fishes, growth responses depended on the climate variable in question. Hotter water temperatures often led to smaller fishes, while longer growing season (increased degree days) usually led to increased growth. Warm-water fishes mostly shrank across the board.

🌡️📈 3) But it's not one-size-fits all. Our modeling demonstrated climate change effects on body size differed by age group and we found divergent trends in response to different aspects of climate change based on thermal guilds.

🌡️📉 2/ Bayesian models revealed that 46% of species age class were changing in length through time with most of those decreasing in length (37% overall shrank through time). Even more, 69%, showed qualitatively smaller lengths.