Discus fish can be picky so you need to ensure that you can, maintain the food that they usually eat. Make sure though to never overfeed your fish. The extra food will just become dirt inside the tank. For younger discus fish, you should feed them about four times daily, older fish only needs to be fed twice a day. You can observe their healthy by taking a look at their feces. Clear or white feces are hints that your discus fish may have internal parasites and that they are unwell and need attention. Also, you should observe their behavior. If your discus fish go on food strike, it s a clear sign that they are unwell. But you can be sure that one is a male and one is a female. If you want to save some money, but you can t really be sure tht they would breed, is to buy baby discus fish, about six to eight of them. You can just hope that at least one or two of them are male or female. Typically though, there would be one of the opposite sex, so you would just have to wait until they grow up. Basic Care Tips for Discus Fish Before you go out and buy a discus fish in your nearest pet store, you need to remember that discus fish are very sensitive when it comes to water condition and food quality. Discus fish are quite expensive and you wouldn t want to buy one if you don t know how to take care of it. To go about it, there are three viable options for you, but to be honest, some of these options may not be the best way to do so. Here are your options: First, is to buy young discus fish, bout six to eight of them. As a fry, it is hard to determine the sex of the discus fish. So this is mostly a hit and miss affair. Keep your aquarium in a quiet and solitary place. Too much noise and motion, like a door opening or heavy human traffic can cause them stress. Never overcrowd your tank. Discus fish are very protective of their space so they need an ample re to grow and breed. The bigger the tank, the better. Consistency is the key.