Table 2. Comparison of time spent in postures in which the marked site was reflected between experimental periods of the mark test.

Marked Sites	E2 versus E3	E2 versus E5	E3 versus E5
Throat mark
#1	0.04* (5.5)	0.004 (0.0)	0.004 (0.0)
#4	0.27 (9.0)	0.004 (0.0)	0.004 (0.0)
#20	0.47 (13.5)	0.020 (4.0)	0.020 (2.0)
#21	0.08 (7.0)	0.043 (5.5)	0.25 (11.0)
Right head mark
#2	0.31 (9.5)	0.15 (14.5)	0.93 (14.5)
#7	0.01* (0.0)	0.004 (0.0)	0.010 (0.0)
Left head mark
#5	0.71 (13.0)	0.004 (1.0)	0.011 (4.0)
#6	0.31 (9.0)	0.011 (4.0)	0.024 (4.0)

Statistical tests (Mann–Whitney U test) at the level of the individual between E2 (no mark) and E3 (sham mark), between E2 and E5 (coloured mark), and between E3 and E5. P values, with the U statistic in parentheses, are reported. P values < 0.05 are in bold.

*Time in E2 > time in E3 in fish #1, but E2 < E3 in fish #7.