2. Some fish, such as pomfret and salmon, are not suitable for grilled fish because their meat is too hard. Judging from the distinction between omnivorous fish and herbivorous fish, we prefer to choose herbivorous fish, because omnivorous fish, although large in size and fast in growth, have low requirements for domestic water quality, are resistant to hypoxia and are easy to breed in large numbers in heavily polluted ponds. Catfish, for example, have less thorns, but the meat is average.