Fish have blood that is carried through their bodies by their circulatory systems. Fish typically have less blood per gram of their body weight than other animals. More »

Fish oil is a blood thinner when taken in high doses, as U.S. News and World Report explains. It interacts with other medications and supplements that thin the blood, including clopidogrel, warfarin, aspirin, ibuprofen a... More » Health Medications & Vitamins Vitamins & Supplements

Individuals taking high doses of fish oil are at the similar risk of blood thinning and excessive bleeding as those taking aspirin, according to an article published in the LA Times. Too much fish oil can cause internal ... More » Health Medications & Vitamins Vitamins & Supplements

Fish accomplish primary movement by relaxing and contracting bands of muscles around the centers of their bodies on opposing sides. This causes their tails to move back and forth. More »

Fish can survive in frozen water because only the surface of the water freezes; the fish are able to live life as normal at lower depths beneath the ice. Oxygen is trapped beneath this ice layer, and fish and other creat... More »

Fish that are high in omega-3 fatty acids are fatty, coldwater fish such as salmon, tuna, black cod, tilefish, halibut, swordfish, mackerel, anchovies, sardines, trout and herring. Omega-3 fatty acids are polyunsaturated... More »

Fish eat a variety of food including plant life and other organisms such as macroinvertabrates, flies, worms, other fish and anything that may live in the fish's habitat. A trout in the wild will try to eat anything in t... More »