Coldwater
Species
Raised at Carpenter's Brook Fish Hatchery
Rainbow Trout
Rainbow trout (Oncorhynchus mykiss) are true trout that
are native to northwestern North America. They have been stocked in
New York waters since the late 1800's. Migratory rainbows, both sea-run
and lake type, are known as steelhead. The tail is heavily spotted
with radiating rows of small black spots. A black margin defines the
olive colored adipose fin that is just behind the dorsal fin. Scales
are conspicuous. The body is heavily spotted with small, well defined
black spots. The top of the body varies from steel-blue, blue-green.
yellow-green to brownish. Flanks are silvery, white, pale yellow-green,
or gray with a pink or reddish stripe that is usually more pronounced
in early-spring spawning males. Average length 8-15 inches.
Brown Trout
Brown trout (Salmo trutta) were first brought to New York
from their native Europe and western Asia in 1892. Scales are conspicuous
on browns, as they are on all members of the genus Salmo. There are
no markings on the lower fins, unlike lake and brook trout which
have white leading edges on their lower fins. The tail is squared
and has only vague, if any, black spots. The mouth extends well past
the eye. In streams, browns have a light brown overall coloration.
The back is brown and the flanks are lighter or silvery. Spots are
reddish intermixed with brown or black spots. Each defined spot is
surrounded by a pale halo. In large lakes the overall coloration
becomes silvery, masking most of the spotting on the body. Average
length 8-18 inches.
Brook Trout
The brook trout (Salvelinus fontinalis), New York's only
native stream dwelling trout, is usually easy to identify. Scales are
conspicuous compared with the readily apparent scales of rainbow and
brown trout. The tail is square, or nearly so, hence the nickname squaretail.
It is the only New York trout with wormlike markings over the top
1/3 of its body. The body is well-spotted with light orange or yellow
spots, and small bright red spots on circular bases of light gray
or blue along the lateral midsection. There are no black spots. The
lower fins are orange with a white leading edge followed by a black
stripe. Males become brightly colored with an orange belly, as in
the illustration, during the fall spawning season. Average length
6-12 inches.