Table 8. Mean (±SE) of the occurrence of a behaviour appearing on a 15 min recording, for Oreochromis niloticus females.

Behaviours	Nest (N = 7 females, n = 26)			Eggs (N = 4 females, n = 19)
	Silent	Sound	Wilcoxon	Silent	Sound	Wilcoxon
Frontal Display	8.1±1.3	4.2±0.9	*	1.1±0.3	3.7±0.7	**
Mouth Fighting	1.5±0.5	–	–	1.6±0.5	1.4±0.4	ns
Lateral Display	2.1±0.4	0.4±0.2	**	1.5±0.4	0.7±0.5	ns
Nest Hover	7.6±0.9	0.6±0.3	***	8±1.6	1.3±0.4	**
Nest Digging	5.7±0.7	5.4±0.9	ns	7.3±3.3	3±1.5	ns
Nest Display	2.6±0.6	0.5±0.2	**	8.4±2.4	0.9±0.2	*
Chase	4.7±1.2	0.2±0.2	**	3.5±0.9	0.5±0.2	**

Behaviours were silent or accompanied by sounds. Wilcoxon test: NS p>0.05,

^*p<0.05,

^**p<0.01,

^***p<0.001.

Nest = Territorial female; Eggs = Female incubating eggs.