Table 1:

The mass and fork length of fish that were or were not entrained through the diversion pipe for each treatment

	Entrainment status
	Mass (g)		Fork length (cm)
Treatment	Entrained	Not entrained	Entrained	Not entrained
Control	115.4 ± 3.5a*	126.9 ± 3.6a	28.4 ± 0.3a	29.2 ± 0.3
Louvre box	56.1 ± 2.5b*	110.6 ± 4.2b	22.7 ± 0.4b*	28.9 ± 0.4
Perforated cylinder	112.0 ± 14.3ac	119.7 ± 4.0ab	28.3 ± 1.2ac	29.1 ± 0.3
Trash-rack box	85.9 ± 4.6c*	110.0 ± 4.1b	26.1 ± 0.5c*	28.7 ± 0.4

Lowercase letters indicate significant differences among treatments for each individual entrainment status (i.e. entrained or not entrained), whereas asterisks indicate significant differences (P < 0.05) between entrainment statuses for each treatment. Details of statistical analyses are given in the main text.