Brook trout in crystal clear water; photo by August Allen on Flickr (noncommercial use permitted with attribution / share alike).
Official State Cold Water Fish of Vermont
Vermont designated brook trout (Salvelinus fontinalis) as the official state cold-water fish in 1978 (Vermont also adopted a state warm-water fish). Nineteen states recognize species of freshwater trout as state symbols; their presence indicates fresh, cold running streams (trout cannot tolerate stagnant or polluted water). All State Fish
Brook Trout Facts
Brook trout live under water conditions that are cool, clean and pure.