Fatigue and depression can result from the depletion of B vitamins. Many women with anemia are deficient in three B-complex vitamins: folic acid, pyridoxine (vitamin B6), and vitamin B12. All three are needed for normal growth and maturation of red blood cells. Their deficiency leads to anemia and fatigue.
There is no general rule on what the different ocean fish tend to eat, since they have different feeding habits. However, most of the ocean fish usually eat each other, as well as crustaceans such as shrimp, krill and crabs. Ocean fish also eat kelp, algae, detritus and plankton, as well as cephalopods such as squid and octopus and also echinoderms such as sea urchins. Some ocean fish are scavengers and feed on the carcasses of other marine animals.
Fish are generally low in fat and high in protein. Fish contain a number of vitamins and minerals, and are the primary food source for long-chain omega-3 fatty acids. Studies suggest that omega-3 fatty acids are important during fetal brain and eye development and may help to prevent heart disease in adults.