![]() ![]() Other members of the family include kelp greenling, rock greenling, and sculpin. The lingcod is part of the greenling family, which is found along the North Pacific coast. There are few studies that have looked at the coloration of fish. The pigment is present in certain Eastern Pacific bottom fish species but is believed to have no effect on humans. However, it has been theorized that the biliverdin bile pigment gives lingcod a bluish hue. Whether or not the meat of a blue lingcod is blue is unknown. In addition, the differences may be associated with dietary differences, as some female lingcod have been identified as residents in shallow nearshore environments. The differences in fatty acid composition between blue and brown fish may be due to other physiological processes, such as the different trophic distributions of lingcod in different major eco-regions of the Eastern Pacific. These fatty acids are precursors for the synthesis of eicosanoids, which play an important role in the immune response in fish. In addition, the concentrations of o-6 fatty acids were lower in blue fish. ![]() Brown lingcod contained higher concentrations of 18:1o-9 and 22:6o-3, while blue fish had lower concentrations of these fatty acids. The largest difference in fatty acid composition between blue and brown lingcod was in the mono-unsaturated fatty acids. For example, the fatty acid concentrations of blue and brown lingcod were not significantly different by sex, but the fatty acid distribution differed. However, the influence of region on fatty acid concentrations did not appear to be significant.įatty acid composition differed by region and did not differ by sex. A large geographic area of the Eastern Pacific was sampled, and blue and brown lingcod differed in fatty acid concentrations throughout the study area. ![]() Fatty acid concentrations were found to be significantly lower in blue fish. In this study, fatty acids were evaluated to determine how they differed between blue and brown lingcod. In fact, biologists have suggested that the blue coloration of lingcod is caused by diet, but lab experiments are needed to test the theory. This unusual color is not found in most species of lingcod and may be due to a diet rich in chlorophyll. Fat ContentĪmong Pacific West Coast marine fishes, blue lingcod has a distinctive blue/green shimmer. They are also a good source of protein and promote healthy skin and cartilage. Lingcod can be found in colder waters and in intertidal reefs. They have big mouths and fangs for teeth. They are a favorite among commercial fishermen. They inhabit rocky reefs in the Gulf of Alaska and in Baja, California. They eat a variety of species, including crab, shrimp, squid, and rockfish. Lingcod are fearsome predators that can live for up to 25 years. ![]()
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