In the Black Lake system in Michigan, adults have been captured over the period 2001-2012 using large trapezoid dip nets. Biological information including weight, length, location and date of spawning are recorded each year.  All adults are tagged using passive inducible transponder (PIT) tags and colored floy tags.

PIT tags used to identify individuals

Plastic floy tags used to mark adults.  Different  sides (right vs left) are used for males and females, respectively.  Different colors are used to distinguish spawning times and individuals.