Contents. 1  Inflammatory joint effusion AND Stiff hip: Causes of All Symptoms. 2  Inflammatory joint effusion OR Stiff hip: Causes of Any Symptom. 3  Inflammatory joint effusion: Causes. 4  Inflammatory joint effusion: Introduction. 5  Stiff hip: Causes. 6  Stiff hip: Introduction.
Sardines are an important part of the food chain. Jupiterimages/Photos.com/Getty Images. Sardines live in large schools that may contain thousands of fish. They typically feed on plankton and are close to the bottom of the food chain; many different kinds of predators eat sardines, including humans.
Like all canned foods, sardines and herrings can be high in sodium, but the amounts vary. A 3-ounce serving of canned sardines in oil has 417 milligrams, or 29 percent of your daily value, compared to pickled herrings with 740 milligrams, which is half your daily intake.ardines and herrings are rich sources of omega-3 fatty acids. Herrings and sardines are so similar that herrings are often canned and labeled as sardines.