I think it is the most difficult breed in this genus to breed, and very few individuals are fully adapted to the artificial environment. Because its dorsal fin is close to vertical erection, much like a piece of feather, and named, many professional books call it the golden mouth groom fish, and the same as the black and white guan knife, they are also a large ornamental fish species in the South China Sea, in Guangxi, Guangdong, Hainan and even reduced to the ranks of edible fish, many economic fish farms, it and some miscellaneous fish as bait for large carnivorous fish.
Despite the huge yields, I have hardly seen individuals successfully reared in small and medium-sized aquariums. The most immediate problem is not accepting bait. Biologically, this fish should be able to accept animal frozen fresh food, but in reality, even if you provide nutritious shrimp and clam meat, it is difficult to make them open. In large aquariums (1000 liters) or aquarium pools, better results can be obtained if they are raised in groups. These fish are able to gradually accept fish and shrimp meat in groups, but through the observation of individuals rearing in aquariums, they seem to prefer to eat large fish with carrion and parasites, and in many cases they follow sharks and groupers around and peck at their things.
If you are able to buy individuals under 10 cm, then raising them in a family aquarium will be likely to succeed, and the juvenile feather closure knife seems to be a little easier in terms of adaptability. Some large pieces of shrimp meat can be tied to the stone and thrown into the aquarium, and they like to peck the meat down and eat it in small bites. Hypothetically, only abundant shrimp or too finely minced shrimp meat is not easily accepted. If after such repeated tuning, they can accept floating bait, basically successful. Don't expect this fish to accept any type of artificial feed, there is no record of success in this regard.