* "Rainbow": This is the most common and straightforward nickname, especially among anglers.
* "Steelhead": This term is often used interchangeably with rainbow trout, particularly when referring to anadromous (migratory) rainbow trout that live in the ocean and return to freshwater to spawn.
* "Cutthroat": This is a bit misleading, as it refers to a different species of trout, but it can be used jokingly or in casual conversation.
* "Speckled Beauty": This is a descriptive nickname that highlights the rainbow trout's beautiful markings.
Ultimately, the best nickname depends on the specific situation and who you are talking to.