Table 4.

Results of the linear and generalised mixed models on different behaviours across the five tanks (Jar, Small, Medium, Large, and Large-Barren), time (0700, 1000, 1400 and 1800h), and filter (presence and absence) for the Siamese fighting fish (Betta splendens; n = 13) used in this study

ANOVA
	Fixed effects	F-value	NumDf	DenDf	P-value
Swimming	Tank	9.59	4	233.88	<0.001*
	Time	19.61	3	228.04	<0.001*
	Filter	12.52	1	152.69	<0.001*
	Tank order	3.96	3	230.47	<0.001*
	Random effects	Variance	Repeatability		P-value
Resting	Fish	1590	0.2 [0.06, 0.37]	33.6	<0.001*
	Residual	5731
	Fixed effects	F-value	NumDf	DenDf	P-value
	Tank	9.91	4	232.15	<0.001*
	Time	21.31	3	228.01	<0.001*
	Filter	0.00	1	224.03	0.99
	Tank order	5.85	3	229.40	<0.001*
	Random effects	Variance	Repeatability		P-value
	Fish	8519	0.4 [0.17, 0.59]	77	<0.001*
	Residual	12448
Hovering	Fixed effects	F-value	NumDf	DenDf	P-value
	Tank	18.75	4	183	<0.001*
	Time	3.67	3	183	0.01
	Filter	5.29	1	183	0.02