In a 12-week experiment, the rock bream, Oplegnathus fasciatus, and olive flounder, Paralichthys olivaceus, were investigated to determine the effects of starvation on their physiological parameters. The protein and DNA contents of the starved fish were significantly higher than the initial values and those of the fed fish. The RNA contents and RNA/DNA ratios of the fed fish were significantly higher than those of the other groups (P<0.05). The hematocrit, hemoglobin, red blood cells (RBC), and mean corpuscular volume (MCV) of the fed rock bream were significantly higher than at baseline (P<0.05), whereas the mean corpuscular hemoglobin concentration (MCHC) of the fed fish was lower than at baseline (P<0.05). The hematocrit, hemoglobin, RBC, and MCHC of the starved group were significantly lower than the baseline values, whereas the MCV of the starved group was significantly higher than the baseline value (P<0.05). No significant difference in alanine aminotransferase was observed between the fed fish and baseline, whereas the starved fish value was significantly higher than the baseline value (P>0.05). There were no significant differences in cortisol levels. However, the glucose level in the fed group was significantly higher than the baseline level and that in the starved group was significantly lower than the baseline level (P<0.05).

• In-Seok Park(Division of Marine Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University) Corresponding author
• Hyun Woo Gil(Division of Marine Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University)
• Bong-Seok Kim2(Inland Fisheries Research Institute, National Institute of Fisheries Science (NIFS))
• Kwan-Ha Park(Dept. of Marine Life and Applied Sciences, Kunsan National University)
• Sung-Yong Oh(Tongyeong Marine Science Station, Korea Institue of Ocean Science & Technology (KIOST))