large fish or 2 medium (catfish, tilapia, or carp) whole, cut into pieces, with the head and tail • zucchinis, sliced • carrots, peeled and sliced • Roma tomatoes, quartered lengthwise • Optional: 1-2 stalks of celery, chopped to taste • onion, sliced into quarters • chilaca peppers or any that add color, cleaned and seeded, cut into pieces • oil • garlic • vinegar • fresh cilantro, finely chopped • Pepper to taste •