DCHP-1 Online
Back's grayling [< Sir George Back, British explorer, 1796-1878] 
a silver-gray freshwater fish, Thymallus arcticus, of the trout family, found in northern waters.
See also: Arctic grayling
- 1820 (1823) There are two other species of Coregoni in Winter Lake, Back's grayling and the round fish. . . .
- 1947 The Arctic grayling, or Back's Grayling, is to be found in all waters tributary to the Mackenzie.
- 1820 (1823) There are two other species of Coregoni in Winter Lake, Back's grayling and the round fish. . . .