* Diet: Trout that eat a diet rich in carotenoids, like shrimp or krill, tend to have more pink or red flesh.
* Age: Older trout often have darker flesh.
* Water temperature: Warmer water can result in a darker flesh color.
* Farming methods: Farm-raised trout are often fed a diet that enhances their flesh color.
So, while it's common for rainbow trout to have a pink hue, not all rainbow trout have pink meat.