• adipose fin is present
• “false” parr marks are present along lateral line
• upper jaw overhangs lower jaw (forming a snout and “under-bite”)
• snout is “pinched” looking when viewed downwards from above
  

Known distribution: Liard River system (Mackenzie R. system), Upper Yukon River system (i.e. Teslin R.) and Alsek River systems.

Other notable comments and clues:

• The most distinguishing feature of the juvenile pygmy whitefish is they do not lose their “false” parr marks at 100mm in length, however these “false” parr my be very faint.
• Body torpedo-shaped and quite round in cross-section.
• Can be very easily mistaken or confused with juvenile round whitefish.
• Sizes of 100-120mm are considered adults (not very big fish as adults).