The Discus.com Learning Center

The Discus.com Learning Center is a collection of articles, forming a knowledge base for mastering the art of keeping discus fish. It is a free resource completely dedicated to discus. Whether or not you are a past customer is irrelevant -- we have made the Learning Center a 100% free resource because we want the greater discus hobby to thrive. We believe individual keepers' successes uplift the entire industry.

Begin by browsing the articles below. Each article has a comment section on the bottom so that you may engage our experts -- and each other. We know you are eager to access the website's content. So, let's get started on your journey into the wonderful world of the incredible discus fish, and learn why the discus truly lives up to its name, the "King of the Aquarium."

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10 Tips on Getting Discus Fry to Attach to Breeding Pairs
Sometimes discus fry don't attach to their parents after they start free swimming. Usually this is a problem with newly formed, young discus pairs. The discus fry will wander around the tank. If they don't attach to the discus breeding pair, the discus fry will eventually starve to death in a... Read More
Getting Discus Pairs to Spawn Again
Discus are considered to be the “King” of all tropical fish. Breeding discus can be very challenging, even for the most advanced tropical fish hobbyist. It requires lots of patience to be successful. Here are a few tips we’ve learned that might help you get your discus pairs to spawn again if... Read More
Tips for Increasing Discus Spawn Yields
If you are not getting many discus fry from your discus breeding pair spawns, then try some of these tips below to hopefully help maximize your discus spawn yields.   Lower Water Hardness in Breeder Tank- This is probably the first tip to try if your discus spawns are having... Read More
An Old School Breeder's Discus Journey: Discus as a Second Career
My name is Michael Wells, owner of my own hatchery. My hatchery is located in Garfield Heights, a suburb of Cleveland, Ohio. I have kept tropical fish for the last twenty years, but was always interested in discus. Like many hobbyists, I figured they were too hard to keep, but soon found out I... Read More
An Advanced Breeder's RO and Fry-Rearing Setup
The sample setup that is being described consists of 4,000 gallons of tank space. Tank sizes range from 20 to 150 gallons. Each tank uses appropriately sized Ebo-Jaeger heaters and Hydro-sponge filters.   Breeding Setup We are currently working twenty-four breeding pairs of... Read More
Lost, Free-swimming Fry!
Your breeding pair of discus has spawned, the eggs have hatched, and the parents have successfully guarded the wigglers. But for some reason, when the wigglers become free-swimming, they can't seem to find the parents. They scatter around the breeding tank. This is a common problem, especially... Read More
Different Strategies for Breeding Discus Fish
Breeding of Discus fish is quite difficult in terms of taking care of them and it may be difficult to succeed in having a high survival rate when you first start out. This is one of the reasons why the price of discus is higher that your typical aquarium fish. However the beauty it brings about... Read More
Sexing Discus Fish
Sexing discus fish is not an easy task. There are a lot of different opinions online about sexing discus fish.   When discus fish are small under 4 inches in size their dorsal (back) fin are always rounded. Therefore it is impossible to tell if a young discus under 4 inches in size... Read More
How to breed the filet mignon of the aquatic world: the blackworm!
How to breed the filet mignon of the aquatic world: the blackworm!
Live blackworms (Lumbriculus variegatus) are regarded as one of the best live food options on the market. They are easy to maintain, durable, and are appealing even to the pickiest aquarium fish. However, the downside is that they do not reproduce as quickly as other live food options. If you are... Read More
How to Care for the Fry
How to Care for the Fry
Red Passion Discus with Fry By the time the fry have become free swimming, both parents will have produced a layer of  mucus on their bodies for them to feed on. For the next several days, while the fry are feeding off their parent’s mucus, do not perform a water change. A water change may... Read More
What to Do if your Discus Eggs are Not Fertilizing
What to Do if your Discus Eggs are Not Fertilizing
Spawn There are five explanations for eggs not fertilizing. First and foremost, you must make sure that your water parameters (especially GH) are correct. If they’re off, you must make the appropriate adjustments. Eggs are also extremely vulnerable to fungus, hence the tank / water needs to be... Read More
How to Sex Discus Fish
How to Sex Discus Fish
Gender identification of a Discus Fish is nothing short of challenging. Even seasoned keepers can sometimes have difficulty determining which fish are male and female. While there are various methods for sexing fish, some theories work better for certain situations. Described here are a few... Read More
Rearing Young Discus
Rearing Young Discus
As the discus fry start free-swimming, they become more of a challenge for their parents. The parents will spend a lot of time trying to catch the babies that swim away from the group. To catch the small fish, they will actually suck the fry into their mouths and then spit them back towards the... Read More
Spawning Media
Spawning Media
You will want to provide your breeding pair with a suitable spawning medium. This can be in your community tank, but you will most likely have more luck with a separate breeding tank. In the breeding tank, you will want to have a vertical spawning medium. Media that you can use include a plastic... Read More
Hatching Discus Fry
Hatching Discus Fry
After about 60 hours (dependent on water temperature), the eggs hatch. The young will be placed, by the parents, on a different place of the breeding medium, until they can swim on their own. After 48 - 60 hours, the first young will already swim free. At this moment, a large deposit of skin... Read More
Plants and Breeding Discus
Plants and Breeding Discus
There are pros and cons to breeding discus in a planted aquarium tank. Plants can be very beneficial to breeding discus, but they can also cause problems. On the pro side, a breeding pair will find is easier to setup and defend a spawning site with a nice arrangement of plants. The plants also... Read More

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