It's a stressful job, living in a fish tank and waiting to be grilled. But a Greek university is making great progress in getting fish to relax and, according to researchers, taste better. Fish living in water tanks under artificial lighting tend to suffer severe stress and depression, Sofronios Papoutsoglou, Professor of Applied Hydrobiology at Athens' Geoponic University, told a Greek daily newspaper. This changes the way the fish taste, he said. For the past 10 years Papoutsoglou has researched conditions for fish in captivity and has come up with a number of golden rules to make them taste better, including customizing water tank color to the species, providing‘play’time in the tanks and improving the quality of their food. Greece is the biggest farmer of Mediterranean fish, exporting over 60,000 tonnes of bream and bass.