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.
Sardines 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.Both types of fish are good sources of vitamin D and zinc, but sardines are rich in calcium, while herrings only have about one-fourth the amount.acronutrients. The nutritional values of sardines and herrings vary depending on how theyâre processed and whether theyâre canned in oil or other sauces. Three ounces of pickled herring have 223 calories, sardines packed in oil have 177 calories and youâll get 157 calories from sardines packed in tomato sauce.