Fig. 4. Changes in plasma osmolality after feeding different diets and ASA administration. Samples were taken just prior to (t=0) and at intervals after net confinement (t=20 min, 60 min and 24 h). Open circles, low-ArA; filled circles, low-ArA + ASA; open triangles, high-ArA; filled triangles, high-ArA + ASA. ASA treated fish were subjected to confinement 4 h after the last dose of ASA. Values are means ± S.E.M., N=10.