Tropical fish breeding

At Tropical fish breeding you will find a lot of information and guidelines that can be useful when you attempt to breed your aquarium fish, or when you suddenly realize that your aquarium is filled with eggs or fry. The level of the articles varies from very basic introductory articles to more advanced accounts regarding the breeding of more difficult aquarium species. If you do not find what you are looking for on this page, we suggest that you take a look in the species database as well since a majority of the species profiles contain breeding information. It is also advisable to look in the article category of the type of fish you want to breed since you often can find breeding information in the articles in other sections too.

Breeding Discus Fish
Discus is not a very easy fish to keep, and breeding them in aquariums is even harder. Only those with previous experience from keeping easier species should try caring for Discus, since many Discuses have died in the hands of inexperienced aquarists. Discus fish are wonderful to keep – they are beautiful as well as charming – but they do require quite a lot of pampering. The key to successfully breeding Discus lies in always providing them with supreme water conditions, keeping them in an aquarium that is large enough for them, giving them high quality food etcetera. A well kept Discus pair will breed regularly in the aquarium, and there is really no special “fix” that will induce breeding in a couple that do not feel well.
The water temperature should be kept at 82 degrees Fahrenheit or higher, and the water must be very soft. Keep the pH as close to 6.5 as possible.During the initial stage of the breeding process your Discus couple will start to defend a small region of the aquarium. Both the male and the female Discus will become highly territorial and guard this region together.Discus pairs are attentive parents and will guard and care for the eggs together. They will fan fresh water over the eggs to ensure high levels of oxygen and they will also remove any unfertilized eggs to prevent bacteria growth and mould. Discus eggs will hatch within 48 hours if the water temperature is right. The fry will stay at the spawning site with the parents for an additional 12 hours. After that, the fry will be moved around the aquarium by their parents, and the parents will use different places to hide the fry in. If you keep up the water temperature your will have free swimming fry in the aquarium after approximately one week. Free swimming fry will need no extra food, because they will eat from the scales of their parents. The adult Discus will secrete baby-food from between their scales. This food will provide the fry with everything they need for about one week. After that, they will be large enough to eat more normal food and you can start feeding them newly hatched brine shrimp.
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Breeding Goldfish

Goldfish cover a wide range of species, but they are all members of the generic family Carassius auratus, and have been bred by the Chinese, Koreans and Japanese. One of the difficulties for the amateur to breed this fish is that they can be difficult to sex. The difference in their gender is only apparent when they are in a spawning condition.
Goldfish are capable of breeding when they are a year old, but they are in their prime during their third year. Under normal circumstances, it is impossible to tell their sex until they have grown to 8cm. Therefore it is impossible to buy a small fish and be certain of its gender.
The process of breeding is induced by a change in the temperature of the water. Goldfish will breed at a temperature of 10-26ºC, but the optimum temperature to ensure success is 20ºC. To induce the fish to spawn you can either wait for more clement weather, or you can artificially and slowly raise the temperature of the water.
It is easy to spot when they are ready to breed, as the male has a ritual of a “spawning chase”, whereby he follows the female around and pushes against her abdomen, for several hours. This should occur if all the conditions are correct with a few days of the fish being brought together. The female, when she is ready will lay her eggs in batches, the first batch being the most fertile. She can lay from five hundred to a thousand eggs, so they will not be released all at once. The male will immediately fertilize these eggs by spraying milt on to them.
Once the egg laying is over the eggs should be removed from the breeding tank, and rinsed in aged water, which is at the same temperature as the water they have been released from. They should then be placed in a separate twenty gallon tank. However the depth of the water should not exceed six inches, as the pressure of the water inhibits their ability to rise to the surface.


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Breeding fish

Information about Breeding Angelfish

It is usually very hard to distinguish a female Scalare form a male one, since the look very similar. Most Angelfish keepers are actually unsure of the sex of their fish until they notice which one is laying the eggs and which one that is fertilizing them. If you watch your Angelfish closely right before the spawning commence, you will however notice a small difference in the size of the papilla between the sexes.
Your Scalare will usually need to become at least 5 cm / 2 inches before they are mature enough to spawn for the first time. If kept on a suitable diet, this will happen when the Angelfish is between 8 and 12 months old. To induce spawning, you should keep your Angelfish in an aquarium that is large enough and not overcrowded.
If an Angelfish suddenly displays a bulging belly and a more aggressive behaviour, it is probably a gravid female Angelfish. Two Angelfish grooming each other is also a typical breeding behaviour.
The Angelfish eggs will be deposited on the spawning slate and placed in very neat and evenly spaced lines. If she doesn’t like the spawning slate, she will deposit the eggs somewhere else in the aquarium.
Several methods are used by Angelfish breeders to protect eggs and fry from hungry adult fish. Some remove all fish except the breeding pair from the aquarium, while other breeders choose to remove the breeding pair instead and place them in a special breeding aquarium.
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