John Duncan QuackenbosJohn Duncan Quackenbos (1848-1926) was a renowned naturalist and author known for his extensive research on fish species, particularly the brook trout and its evolutionary history. His passion for aquatic life and scientific exploration led him to prduce detailed works that contributed significantly to the understanding of fish evolution. Quackenbos's dedication to studying and documenting the diverse forms of fish in their natural habitats established him as a respected figure in the field of ichthyology. Read More Read Less