
%0 Journal Article
%A Thomson, JM 
%T Some Aspects of the Ecology of Lake Macquarie, N.S.W., with Regard to an Alleged Depletion of Fish. X. The Movements of Fish.
%J Marine and Freshwater Research
%D 1959/09/01
%V 10
%N 3
%P 375-387
%K 
%R https://doi.org/10.1071/MF9590375
%U https://www.publish.csiro.au/paper/MF9590375 
%X Of 20,128 fish of 29 species tagged, 9.4 per cent. were recovered by commercial fishermen and anglers. A further 1.5 per cent. were retaken by the tagging crew. Only 11 species were tagged in numbers greater than 100. Returns covered 17 species, showing recovery rates varying from 1 to 21 per cent. Some exchange of fish takes place between the northern and southern parts of the lake, but this is consistent only in the case of the flat-tail mullet. Within the two parts of the lake lateral movements of some species take place; other species are sedentary. These facts suggest that the necessary condition for population estimation, that tagged fish should be randomly distributed amongst the population, is not achieved for most species. 
