can i keep siamese fighting fish with other fishS. , Z. Y. W. , B. Y. The Ph of water can change, so it is a good suggestion to examine it continually. Foods and feedingLike most fish, combating fish are omnivores, in the wild they will eat any animal or vegetable food they can find. They prefer animal foods similar to mosquito larvae wrigglers daphnia, etc. In an aquarium they’ll eat all normal styles of aquarium foods, but seem to do better on a food designed for them. As with almost any animal numerous food is welcomed by combating fish. Do not overfeed!Aquariums and CompanionsOne fighting fish without some other fish can be kept in a quite small tank, as long as it can be kept warm.