Deep-sea fishes, Off-Tohoku, Brominated flame retardants, Stable isotopes, Organochlorines, Food Chain, Halogens - metabolism, Water Pollutants, Chemical - metabolism, Environmental Monitoring, Fishes - metabolism, Animals, Species Specificity, Japan, Halogens - analysis, Pacific Ocean, Fishes - physiology, Water Pollutants, Chemical - analysis, Halocarbons,...