Breed Angelfish

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Angelfish are a favorite of freshwater aquarium hobbyists for their unique appearance. With triangular bodies, bold stripes and long fins, this elegant, easy-to-keep tropical fish will beautify any freshwater tank. Originally from South America and primarily found in the Amazon, these attractive fish have adapted well to being kept as pets in aquariums that are properly set up to meet their needs. In addition to their many positive attributes, angelfish are also relatively easy to breed in captivity. Under the right tank conditions, those who enjoy keeping angelfish can watch them hatch and grow into adults. Once you learn how to breed angelfish, you will be well on your way.

Steps

Setting the Right Conditions for Breeding

  1. Set up a freshwater aquarium large enough to prepare breeding angelfish. Try to choose a tank that is at least {{safesubst:#invoke:convert|convert}} (75.7 l) and ideally 29+ gallons large. Your angelfish pair will do best with plenty of space. In cramped quarters, angelfish won't feel secure and will fail to breed.
    • Try also to place the angelfish in a tank that is tall. Mature angelfish can grow up to a foot long from their dorsal to their anal fin, meaning you'll want to accommodate their unusual length.
  2. Test the pH of your water. In their natural habitat, freshwater angels live in soft water that's slightly acidic. For best results, make sure that their aquarium water has a pH of between 4.7 and 8.7, with the ideal range being 6.5 and 6.9.[1] Angelfish are relatively hardy when it comes to pH and tolerate a wide range of water conditions, but you want to try to shoot for this happy medium in order to produce a contented breeding pair.
    • If your water isn't in the ideal pH range, a de-ionization filter or reverse osmosis (R.O.) filter can do the trick. These are usually attached to your main water supply, and can run from fairly cheap to incredibly expensive. They are, however, effective.
    • Try not to use chemicals to alter pH if at all possible. Chemical pH solutions alter the alkalinity or acidity of the water much too drastically, something your angels are sensitive to. Angels may fail to breed or, worse, die off if the pH swings too drastically from one extremely to another.
  3. Set the water temperature. Again, because angelfish are very accommodating fish, they tolerate a pretty wide range of temperatures. But they do thrive when the water temperature is right in their wheelhouse, between 72° and 82° F (22° and 27° C), with 80° F being a good target.[2]
    • Keep in mind the tradeoffs of different water temperatures. Warmer water is arguably better for angels' immune systems, whereas colder water increases their lifespan.
  4. Put a good filter in your aquarium. Angelfish are ideally suited to strong currents, so be careful about using a high flow filter, which could tire them out unnecessarily.[3] Better to use a sponge filter, gravel filter, or both — that way, your angels will have energy for love and their small fry won't be sucked up into the filter when they hatch.
    • Do at least 20% water change each week either as part of regular cleaning activity.
  5. Feed your angelfish properly. Angels typically aren't very picky eaters, but they do enjoy their fresh foods and generally have very robust appetites. Shoot to feed your angels at least two or three times a day, being careful not to overfeed them.
    • Give your angels 3 to 5 minutes to feed on any food you give them. Any food that hasn't been eaten after 5 minutes should be removed from the tank to promote clean water.
    • If introducing a new kind of food to your angels, don't feed them at all for one or two days. Then, when you do introduce the new food, provide enough for one or two bites, supplemented with regular food. This should be enough to get them excited about the new kind of food.
    • A regular diet may consist mainly of dried flake food, supplemented with brine shrimp and blood worms. Live food, apart from brine shrimp, isn't recommended for angels because of the chance of disease.

Setting in Motion Breeding

  1. Sex your angels to isolate a breeding pair. Sexing young angelfish (body size is smaller than a quarter) is next to impossible, so don't even bother. With more mature angelfish, sex can be distinguished by looking at the tubes of the vent. With males, the tube is smaller, pointy, almost triangular. Female tubes are larger and square, like an eraser on a pencil.[4]
  2. Use other common characteristics to sex your angelfish. Looking at the tubes of the fish is the single most reliable way of sexing. But taken together, other characteristics can help you determine the sex of an angel. Just remember not to cue in on any single characteristic when sexing — look at the whole picture.
    • Females tend to be more round while males tend to be more angular.
    • Female Dorsals are held slightly backward, while male dorsals are fully upright, at almost a 90 degree angle to the head bump.
    • Females tend to hold Ventrals closer to body, while males hold ventrals more erect
    • Females have a more smoothly sloped head, whereas males often have a distinct bump on their heads.
  3. Alternately, purchase a breeding pair. If you're not sure whether you're dealing with males or females, it can be useful to simply purchase a breeding pair. When you do this, make sure they are younger and have proven to breed good fry. This is more expensive than sexing your own, but often it's a more reliable and efficient way of breeding quickly.
  4. If keeping more than two angelfish, wait for breeding males and females to pair off. This may take 6 to 7 months, or even longer for angels that are wilder or weaker. In a large tank, you'll notice one male and one female essentially pairing off, sending away on bothersome third party. Wait a day or two just to make sure the pair is really a pair.
  5. Isolate any breeding pairs in a separate spawning tank. Make sure that the water chemistry is the same as the tank they were just in. Angels feel more secure and in the mood for procreation when left to themselves. Put them in at least a {{safesubst:#invoke:convert|convert}} tall tank that's elevated so that you move by the tank at your chest- or eye-level. This will create fewer distractions, and ultimately, a happier couple.
    • In the spawning tank, provide a surface for the angels to deposit their eggs on. A spawning cone, spawning mop, or simply a piece of slate are items breeders often choose. Angels have also been known to lay their eggs directly on the water filter, for example.

Waiting for the Angels to Spawn

  1. Wait for your breeding pair to spawn. Sometimes, breeding pairs spawn only days after being transferred to the spawning tank. In other cases, it can take several weeks of waiting and a little bit of prodding for them to feel comfortable enough to produce fry. Here are some things you can do to encourage breeding:
    • Raise the temperature a few degrees if it's currently under 80° F.
    • Do a 75% water change, being careful to condition the water and make sure the pH and softness of the water is close to what the angels are accustomed to.
    • Feed them a bit more than usual with high-quality freeze dried food.
    • Give them more security by adding additional plants, spawning mops, or other fibrous, decontaminated props.
    • Try a larger aquarium if your tank is at or below the {{safesubst:#invoke:convert|convert}} mark.
    • Place another angelfish or another breeding pair close to, but still separate from, their aquarium. Sometimes, the sight of another angelfish will get them breeding.
  2. If all else fails, pair the angels up with different mates. If you've waited in vain for your breeding pair to do the deed, and you've tried all of the above suggestions, it may be time to play matchmaker again. There's a good chance the breeding pair isn't actually compatible, and you'll want to find a different mate for each fish. Try placing them back into a bigger aquarium and wait for them to pair off with other mates.
  3. Let the angelfish rear their own fry if desired. Angelfish normally care for their own spawn so leave them to it once they have spawned and disturb them as little as possible. Any form of undue stress or unexpected routine can cause the angelfish to start to eat their own fry.
    • As the breeding pair raises their fry, continue feeding the breeding pair as before, taking note that they may not be as hungry. Remove any unwanted or uneaten food immediately after feeding and take pains to ensure the water quality is high and uncontaminated.
    • Occasionally you get a pair of angels that eat their fry. When this happens, you have no alternative but to remove the cone or slate with the eggs to another tank containing identical water and raise them artificially.
  4. Raise the fry artificially if you need to. Transfer the fry to a clean {{safesubst:#invoke:convert|convert}} tank with an airline feeding medium-sized bubbles into the water. Treat the 100% filtered water with a fungicide, then with Acriflavin, an antibacterial. Transfer the fry on the spawning slate or mop so that it's facing the bottom of the tank and close to the airline. Consider keeping the tank in the dark to prohibit the harmful growth of bacteria.
  5. Wait for the fry to hatch after about 60 hours in 80° F. At this stage, they'll be simple wrigglers, and won't need to eat anything. After 5 days in this stage, they become free-swimming and will start to need food (brine shrimp work well). Small, frequent feedings are best. After the fry begin to swim in a cloud, they should be transferred to a medium sized (2.5 gallon to a 10 gallon) tank.

Video

Tips

  • Because angelfish are sensitive to chemicals, it is best to try to balance your tank naturally when possible. A water conditioner is less harmful than most chemicals and can help balance your aquarium's water by neutralizing harmful chlorine and metals.
  • An alternative to purchasing a breeding angelfish pair is to buy 10 to 12 junior angelfish. They will pair up and breed. Pairs will stay together, and breed and lay new eggs every few weeks.
  • Sponge filters are best when attempting to breed angelfish. They filter the water best and are easy to rinse and clean when partial water changes in the tank are necessary. Small, baby angelfish also will not get trapped in sponge filters.
  • When learning how to breed angelfish, try different techniques if they are hesitant to breed. Raise the temperature of the water a few degrees, replace at least 70 percent of the water during a partial cleaning and try feeding live or freeze-dried food.

Warnings

  • Do not do sudden temperature changes to your angelfish tank's water. This can shock the fish. If you want to boost the temperature to encourage breeding, do it slowly and only by a few degrees.
  • Do not forget to do regular, partial cleanings of your angelfish tank water. The pair are very sensitive to dirt and debris when breeding and are not likely to breed in dirty water.
  • Do not use gravel in your tank when breeding angelfish. If the female lays her eggs among gravel, they can be damaged during tank cleanings or be washed away.

Things You'll Need

  • Aquarium and filter system
  • Aquarium plants
  • Driftwood
  • Quality fish food
  • Water conditioner
  • Large glass jar or separate aquarium for the angelfish eggs
  • Live or freeze dried fish food to stimulate breeding

Related Articles

Sources and Citations

  1. ↑ http://www.angelsplus.com/ArticleBreeding.htm
  2. ↑ http://www.aquariumguys.com/angel-fish-care-article.html
  3. ↑ http://www.aquariumguys.com/angel-fish-care-article.html
  4. ↑ http://www.fishlore.com/fishforum/angelfish/128849-big-mystery-how-sex-angelfish.html

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