Weight-length data for 32 (N = 3,371) saugeye (walleye Stizostedion vi
treum x sauger Stizostedion canadense hybrids) populations from eight
states were used to develop a standard weight (Ws) equation. We used t
he regression-line-percentile technique, which provides a 75th-percent
ile standard, to develop the equation. The proposed Ws equation is log
10Ws(g) = -5.692 + 3.266 log10TL(mm), and the English equivalent is lo
g10Ws(lb) = - 3.760 + 3.266 log10TL(in). The saugeye Ws equation is va
lid for fish greater-than-or-equal-to 170 mm. The proposed Ws equation
was used to calculate relative weight (Wr) values for individual fish
from each population to test for length-related biases. A significant
relationship between total length and Wr was observed in 18 of the 32
populations. Ten populations had negative slopes while eight had posi
tive slopes. There was no significant difference in the occurrence of
positive and negative slopes (X2 = 0.22, P>0.50); therefore, no length
-related biases were evident for the populations used in this study. B
ased on percentages of world record length for saugeye, we recommend t
he use of 23 cm (9 in), 35 cm (14 in), 46 cm (18 in), 56 cm (22 in), a
nd 69 cm (27 in) as minimum stock, quality, preferred, memorable, and
trophy lengths, respectively.