Brook Trout (Salvelinus fontinalis)

Identification: Base of dorsal fin equal to, or longer than, anal fin base. Upper jaw extends to back margin of eye. Back olive-green to dark brown or black. Sides lighter, ventral surface silvery white. Light green or cream coloured wavy lines on top of head and on back, same coloured spots on sides. Also, red spots on sides surrounded with bluish halos. Dorsal fin is yellowish, with heavy, black wavy lines. Anal, pelvic, and pectoral fins with a white leading edge, floowed by black pigment and then reddish colouration. Mature males develop orange red lower sides and belly.

Life History: Spawns in late summer or autumn, the actual date can range from August to November depending on latitude and temperature. Spawning sites are usually gravel beds in the shallows of stream headwaters or lakes with upwelling and current. Males usually arrive first and outnumber females. Fecundity varies from 100 to 5000 eggs per female.

Feeding: Carnivorous, feed on aquatic insect larvae and terrestrial insects, also amounts of almost any other organic material including plant matter, worms, crustaceans, arachnids, molluscs and other fishes.

 

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