Final answer:
Fishermen's reactions to the introduction of new trout like rainbow trout vary and are not explicitly given, but they may range from welcoming to skeptical based on potential ecological impacts and the influence on their livelihoods. Historical trends point toward complex relationships between fishermen and introduced species.
Step-by-step explanation:
The reaction of fishermen to the introduction of new trout species such as rainbow trout can be varied, and the specific reaction to rainbow trout is not detailed in the given passages. However, historical examples suggest initial reactions to non-native fish introductions have been mixed.
Additionally, fisherman reactions can be influenced by the direct impact on their livelihood. The removal of native species like cutthroat trout and the decline of other native fishes in favor of non-native rainbow trout, for example, indicates that ecosystems can become dominated by introduced species, potentially changing fishermen's practices and local fish markets.