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Feeding Discus Fish

We feed our Discus primarily Beef Heart Flake, but supplement it every day with other Flake and Freeze Dried Foods.  The Multi Pack is great way to get started.  As for the Freeze Dried Foods, I would start with the Brine Shrimp.  Once your Discus get larger, you should switch to Earth Worms.  Larger Discus also like Glass Shrimp.  Beef heart Flake is extremely high in protein (higher protein than most other flake foods).  It is also fortified with Vitamins and Minerals, and you will find your Discus like it more than any other flake food.  Your juvenile Discus will grow significantly faster when they are fed Beef Heart Flake.

Please feed your Discus three times a day, morning, noon and night.  The nighttime feeding should be with the lights out.  Discus are naturally nocturnal grazers.  If there is some bullying or aggression in your tank, please feed them at both ends of the tank.  Feed them as much as they can eat in 10 minutes.  They should be kept with some Corydoras Catfish, Plecos or Loaches to eat any food uneaten by the Discus.

Please go to this link:   http://www.somethingsphishy.com/discus-and-angelfish-food-c-41_67.html 

If you are acclimating new fish into a tank, please do not feed your new Discus for 24 hours.  As we detail in the Acclimation Instructions, you should not feed your new for fish at all for the first 24 hours after delivery.  Any food given will likely not be eaten and can end up clouding the tank.  After the stress of shipping, they will typically have no appetite.  Feed them very little for the first week as they will still have little appetite.  Over the next few weeks as they get used to their new home, they will slowly get their appetite back.  You can increase […]


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How Old and How Big do Discus Get?

**Discus Age and Size**

Discus in an aquarium will typically live around 8 years, but some can live to 10 years old.  There is some evidence that keeping the temperature at the low end of the range for Discus at around 80 degrees will slightly increase their longevity. 

In a 120 gallon or smaller tank, Discus will typically grow to 6-7 inches.  In a larger tank that is very clean and when you feed them properly three times a day with high protein food like beef heart flake, they can grow to around 8 inches.  Having some current will also have the slight effect of them growing larger.  Despite some misinformation on the internet, males and female will usually grow to approximately the same size.  It is not uncommon for wild Discus to grow to 9-10 inches.  I have heard stories and even seen pictures of wild Discus that a reported to be 12 inches, but I have never seen one with an actual ruler next to it, so I cannot verify if that is correct.


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Breeding Angelfish Part 12 –Growing out the Fry

This will conclude our series on breeding Angelfish.

Angelfish will eat baby Brine shrimp immediately upon becoming free swimming.

Things you should remember. First, these babies will be very small and weak, so you will need to turn off all filtration, except for a sponge filter.  The biggest mistake that you can make is to do a water change in this aquarium with water that is not EXACTLY the same temperature.  Angelfish fry are extremely sensitive to temperature shock and will die if you do a water change with water that is more than a few degrees different in temperature.  With that said, Angelfish fry are also very sensitive to ammonia burn, so you will need to do daily partial water changes.  We like to keep our grow out Angelfish tanks, until they reach about 1 inches, at a temperature of 82 degrees, as the high temperature increases their metabolism and speeds up growth.

Start adding a small amount of live baby brine shrimp to the tank within 24 hours of the fry becoming free swimming. For the first week, just feed them twice a day.  To much food will quickly cloud the tank at this stage and that is one of the biggest worries.  By the end of one month, they will be about 1/3 inch and will be eating baby brine shrimp four times a day  At this point they are much more hardy and you are pretty much out of the woods.  Your Angelfish fry should reach 1 inch in approximately 3-4 weeks.  At about 1/2 inches, you can start adding in a crumbled flake food.   We recommend adding Flake Beef Heart to their food and slowly convert them over to a diet of primarily flake food.  This is good for them health wise and will save […]


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Breeding Angelfish Part 11 –Raising the Fry Naturally

Previously we went over how to artificially raise the fry. Now we will go over raising the fry naturally.  Next we will go over growing out the baby Angelfish.

Naturally raising the fry requires very little work on your part. The parents do all of the work for you.  Unfortunately, it is very common for the parents to eat the babies, so most breeders artificially raise the fry.  There are advantages to naturally raising the fry over and above that it is much easier.  Angelfish fry will eat some slime off the parent’s side for the first few days.  Unlike Discus, they can survive without the slime and will immediately start eating other food.  This slime is very high in protein and contains antibodies that help the babies fight off disease.  Naturally raised fry will grow much faster at first and will have more resistance to disease throughout their lives.

There is also the enjoyment of watching your Angelfish raise the fry. They will stay mostly around the parents for the first month and the parents will zealously guard them. When a baby strays to far, the parents will mouth it back to the main school.  This is done by both the males and females.  There is nothing more rewarding than watching your large Angelfish parents and the fry swimming around the tank as a loose school.  I find this fascinating and it has always been my favorite part or the hobby.

Things you should remember. These babies will be very small and weak, so you will need to turn off all filtration, except for a sponge filter.  You can also take the sponge from a sponge filter and put it around the intake tube of an over the side filter.  Canister filters are two powerful to put the sponge […]


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Breeding Angelfish Part 10 – Artificially Raising the Fry

Artificially raising Angelfish is actually very easy and if you are looking to have the highest survival ratio it is definitely the way to go.

We raise the fry in 5 gallon tanks. Getting the water correct is very important.  You should take water out of the spawning tank right before transferring the eggs and put it in the 5 gallon tank.  The temperature of the tank they are coming from and the one it is going into has to be the same.  A difference of even a couple of degrees will kill the eggs.  Clean water is absolutely essential for hatching the fry as if the water is at all dirty, fungus will form on the eggs. That is one reason that keeping the spawning tank water extremely clean is so important.  To assist in keeping fungus from forming, we do two additional things.  We add Methylene Blue to the water.  Add enough to turn the water a deep blue.  We also run heavy aeration next to the eggs, creating a current, which helps to stop fungus from forming.  When the tank is ready and all the above conditions are met, quickly take the eggs out of the spawning tank and place them into the rearing tank.  They should not be out of the water more than 10 seconds.  Just a heads up, the spawning Angelfish will be very unhappy about you taking their eggs out.  They will attack your hand and while it really does not hurt, it can be quite startling.  To reduce that, I usually tap on the opposite end of the tank to distract them then quickly reach in with my other hand to take the eggs out.  Hopefully the eggs will be on a breeding cone or something else that is very easy to […]


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Breeding Angelfish Part 9 – How to raise the fry?

Previously we went over Angelfish fry prior to them becoming free swimming. Now we will go over your options as to how to raise the fry.

You now need to make a critical decision. Do you let the Angelfish raise their own fry naturally or do you artificially raise them.  Both ways have their advantages and disadvantages.  We will briefly discuss the advantages and disadvantages of both methods.

The main advantage to letting the Angelfish raise their own fry is that it is MUCH less work. Other than keeping the water ultra clean via water changes, as you will not be able to run any filters except a sponge filter, there is not much to be done different to what you normally do.  If possible, please take any other fish out of the tank.  The huge disadvantage is that the parents will eat the fry a majority of the time.  They will do it very quickly, you will not know they are eating them and there is really nothing you can do to prevent it.  There is one other advantage to naturally raising the fry that most people tend to forget.  Angelfish fry will feed a little off the natural slime of their parents and in eating the slime they receive antibodies from their parents, thereby making them much more resistant to disease later in their life.

Conversely, the advantages and disadvantages to artificially raising the fry is just the opposite. There will be two to three weeks of caring for your fry several times a day.  The positive side, your chances of getting the Angelfish fry past this stage is greatly increased.  Generally speaking, more fry will survive when you artificially raise them.

As Angelfish are much easier to artificially raise that some other fish such as Discus, we […]


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Breeding Angelfish Part 8 – Free Swimming Fry

Previously we went over Angelfish infertility. We will now go over the fry prior to them becoming free swimming. Next we will go over fry after they become free swimming. This is the easiest part of spawning and is also one of the most fascinating. After 48 hours the eggs will begin to hatch. Only the dark ones will hatch. They are dark because after about 36 hours, the eye starts to develop and will show through the egg sack. Most of the fry will stay attached to the surface where the eggs were laid via a small membrane on their head. A few will become detached and will fall to the bottom. At this point the fry will look like a small comma to the naked eye. Under magnification, they are quite ugly and will look like something straight out of a monster movie. They will remain attached to the substrate for another four days. There is not much to do at this point. They will have an egg sack and will live off of it during this entire time. There are only two real concerns. The first is the parents eating them. If you are going to artificially raise the fry, you will want to take the parents out. If you are not going to artificially raise the fry, you should cover them with a screen. The second concern is fungus. Adding Methylene Blue to the water will mostly solve this. If you are going to artificially raise them, and have taken the parents out of the tank, you should add aeration about one inch from the fry to keep the water moving around them. They will start to become free swimming 4 days after hatching.


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Breeding Angelfish-Part 7- Infertility

We have previously gone over the problem of Angelfish eating their eggs while spawning, or shortly thereafter. We will now go over fertility. Next we will go over what happens once the eggs hatch, but before the fry are free swimming. Fertility is an issue with Angelfish and will vary drastically between different pairs. Some pairs will be totally infertile; other pairs will be infertile at first and then will become fertile. On pairs that are fertile, the percentage of fertile eggs will range from just a few to, best case scenario, about 90% fertility. The amount of fry produced can vary from just a few to a couple of thousand. There are three main causes of infertility in Angelfish. The first one is mechanical and is caused by the male not doing his job and fertilizing the eggs. The second and third are biological and are due to either the eggs or sperm being genetically or chemically infertile. When Angelfish lay eggs, the male should follow the female on a fertilizing run as soon as she does an egg laying run. Some males only make the run after every two or three egg laying runs. It is my experience that these males tend to have a lower fertility rate. Some males will not fertilize at all. These tend to be the males that also are most aggressive on eating the eggs. There is very little you can do to change these males. Some Angelfish are infertile due to water chemistry. To optimize fertility, water temps should be kept constant between 84 and 88 degrees. Ph should be kept constant at 6.5. Heavy filtration, if possible, is a big plus. I try and avoid doing water changes at this time. The hatch rate is the best when the water is […]


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Breeding Angelfish – Part 5 – The Spawning Process

In the last article we went over how to get your Angelfish to spawn. In this article we will go over the actual spawning process. The spawning process is everyone’s favorite part. This is what hooked me on Tropical Fish as a young boy and I still, 45 years after my first spawn, find it fascinating.. The first sign that your Angelfish are getting ready to spawn will be their obsession with cleaning the slate or breeding cone you provided. It will always be on a surface that is mostly vertical and if you do not provide a surface that meets that condition on which you want them to use for spawning, they will spawn on other surfaces that are much more difficult such as the side of the tank or filter tubing. Once you see both of them cleaning the spawning site, spawning will usually follow within a day or two. You will also see them start doing the mating dance. They will swim towards each other at a slightly upward angle. Once they get next to each other, they will shimmer and then swim away from each other at a slightly lowered angle. The mating dance is not always performed. I have found that Wild Caught Angelfish almost always do it, but later generations of tank raised strains often do not. The most spectacular aspect of the spawning will be the colors of your Angelfish. Whatever their color, it will become MUCH more intense and vibrant during spawning. This will be the prettiest you will ever see your Angelfish. They will also become aggressive toward other fish, including other Angelfish, at this time. They will aggressively defend the breeding site from all intruders, including you. If you put your hand in near the spawning site when they are […]


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Breeding Angelfish-Part 6- Eating of Eggs and Fry

We will now go over what to expect after the eggs have been laid. This is where the frustration starts. The first two issues that you will be confronted with are eating of the eggs and fry, especially by the male, and infertility. We will go over the eating of the eggs first. We will go over infertility in the next part of the series. One problem, and the one you must get past, with breeding Angelfish is the eating of the eggs, or fry once the eggs hatch out, by the parents. The good news is that only about 30% of the spawning Angelfish pairs will eat the eggs and another 20% will eat the fry as soon as they hatch out. This is a much lower percentage than with some other Cichlids such as Discus. While both parents will eat the eggs, the male does it more often. This is sometimes done as they spawn and there is very little you can do if this occurs while spawning. The female will make her egg-laying run and then the male, instead of following her with a fertilizing run, will follow her and eat the row of eggs. This behavior is most common in new pairs. Many new pairs will eat their eggs in the first couple of spawns and then eventually stop eating the eggs, so do not give up on them. If you get lucky and they do not eat their eggs when spawning, there is still a chance that they will eat them before they hatch. Fortunately, if you get this far, there is something you can do. You can, at this point, take the eggs out and artificially raise them or you can take a mesh screen (house soffit screen works very well) and fit it […]


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