Active acoustic tracking suggests that soft sediment fishes can show site attachment: a preliminary assessment of the movement patterns of the blue-spotted flathead (Platycephalus caeruleopunctatus)

Table 1 Quantitative summary of movement patterns of blue-spotted flathead over 4 and 60 days

Fish ID	Total length (mm)	4 days			60 days			RI
Fish ID	Total length (mm)	95 % KUD	FD	MAI	95 % KUD	D	FD	RI
F1	400	0.11	534	30.55	0.211	108	541	1
F2	225	0.014	108	23.95	–	–	–	0.5
F3	402	0.015	109	44.96	–	–	–	0.33
F4	195	0.013	145	22.11	0.1	305	330	1
F5	432	0.010	149	25.11	0.051	240	240	0.92
Mean	331	0.046	209	29.34	0.121	218	370	0.75
SE	50	0.025	82	4.15	0.037	45	69	0.14

Fish total length (mm), furthest distance (FD) in metres from release point for the first 4 days and over 60 days. Displacement (D) in metres is distance from release point at study end. Activity space (km²) based on 95 % kernel utilisation distribution (KUD). Minimum activity index (MAI m h⁻¹) calculated by dividing the distance between two points by the time elapsed between observations. Residency index (RI) is given as a proportion of tracking days detected

ISSN: 2050-3385