Clean, wash and chop the peppers and tomatoes. Wash the basil and pluck the leaves.
Mix lemon juice, salt, pepper and 1 tablespoon of oil. Cut the avocado in half lengthwise and stone it. Remove the flesh from the skin and cut into slices. Carefully mix into the marinade with the bell pepper, tomatoes, basil and cottage cheese.
Wash the pike-perch fillet, dab dry well and cut into 4 pieces. Season with salt and a little chilli powder. Heat 1 tablespoon of oil in a coated frying pan. Fry fish first on the skin side, then on the meat side for 2-3 minutes.
Arrange the fish on the salad.