Quiz: What type of fish were introduced to Crater Lake, and what i February 18, 2025 by Gideon Lakewood What type of fish were introduced to Crater Lake, and what impact did they have? Discover more about Crater Lake Tours at our home page. A) Rainbow trout, which disrupted the native ecosystem. B) Bass, which improved the water clarity. C) Salmon, which increased biodiversity. D) Catfish, which had no significant impact. Submit Answer