Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Discus in Singapore

Although this book describes information about Discus pertaining to the Singapore market, you could use it as a general description on how to keep Discus, especially if you are a breeder. It provides you with profiles of successful Discus breeders in Singapore. It also provides pictures of breeding farm setups, Discus diseases, water conditions, and popular Discus strains.