Both sculpin species readily ate water-hardened and fresh
salmon eggs placed in front of them. The water-hardened eggs
were heavier (0.124 ± 0.001 (SE) g, n = 91 versus 0.100 ±
0.001 g, n = 69) and had a greater diameter (6.17 ± 0.03
(SE) mm, n = 92 versus 5.73 ± 0.04 mm, n = 71) than fresh
eggs. The average percent increase in egg weight and diameter
for eggs of the same female was 9.5 and 3.2%, respectively
(n = 5 females)