Can fish be fed human food or "table scraps?"

Ideally, no. This could potentially throw off a balanced diet a fish should be fed. It also tends to cloud the water and make for a messier aquarium. However, zucchini, spinach, and romaine lettuce can be given to herbivores, such as Plecos, African Cichlids, Pacus and Silver Dollars. When feeding leafy vegetables use a veggie clip to hold the vegetables in place and let your fish graze. If you feed zucchini, cut the zucchini into quarters lengthwise and feed 3 to 4 inch pieces. Leave the vegetables in the aquarium only as long as they appear fresh and you fish show interest in them. Remember that fresh vegetables will decay quickly and produce ammonia.