Most authorities recognize three species within the perch genus: 1  The European perch (Perca fluviatilis) is found in Europe and Asia. 2  The Balkhash perch (Perca schrenkii) is found in Kazakhstan, (in Lake Balkhash and Lake Alakol), Uzbekistan, and China.
Foods to avoid with diverticulitis. In the past, doctors had recommended that people with diverticular disease (diverticulosis or diverticulitis) avoid hard-to-digest foods such as nuts, corn, popcorn or seeds, because of the risk that these foods may get stuck in the diverticula and lead to inflammation.
Diverticulitis Diet. You may be asked to start with a clear fluid diet at the onset of diverticulitis. After a few days, you may incorporate the following low fiber foods (less than 10 g per serving) that are mild enough to be eaten during a diverticulitis flare-up. Grain Products: 1  enriched refined white bread, buns, bagels, English muffins.