2019-04-222019-04-221989Fishbyte 7 (3): 25-28https://hdl.handle.net/20.500.12348/3253The concept of a disc-shaped two dimensional imaginary planet called Arde is conceived in which there is up and down, forward and backward but no left and right; and the first elements of a theory of fishing in a two dimensional world along with advice on the management of fisheries there, is described.application/pdfCC BY 4.0Journal Article