![]() Use a heater to slowly raise the temperature of the water if necessary. Remove the eggs (or the whole plant or spawning mop) and put them into the smaller fry tank that you set up earlier.Įnsure that the fry tank is a similar temperature to the main tank – between 20☌/68☏ and 23☌/74☏. Unfortunately, goldfish will eat their own eggs, so you can’t just leave them in the main tank! You must therefore remove them from the tank or pond as soon as possible. When the male notices the eggs (which won’t take long!) he will swim over to the area where they were laid and spray sperm to fertilize them. Goldfish lay lots of eggs, and they’re very sticky, so you will easily spot all of them stuck to nearby plants. This is spawning behaviour, though it can be easily be confused with fighting.įollowing this spawning behaviour, the female will swim to a planted area of the tank – or near to the spawning mop – and lay her eggs. You may notice the male chasing the female around the tank and poking her in the abdomen. Goldfish are ready to breed when males display white “pimples” on their gills and fins ( like this) and females look fatter than usual. Then, when you want to induce breeding, raise the temperature of the water by 2☌/3☏ per day, until it is between 20☌/68☏ and 23☌/74☏. To replicate this temperature change in your own goldfish breeding setup, first lower the temperature of your tank to between 10☌/50☏ and 12☌/54☏. Because of this, goldfish breeding is triggered by a change in temperature (from the cold winter to the warmer spring). When living in the while, goldfish breed in the spring. ![]() This fry tank should only filled to between six and eight inches deep, with water from the main tank. Then, shortly before beginning the goldfish breeding program, set up a smaller tank for the fry. Once the main tank is properly cycled you can add your adult fish (or juveniles that you plan to raise to adulthood and then breed). You can buy a spawning mop in your local pet shop. A spawning mop will help protect the eggs from their parents and will make it easier to move the newly hatched baby goldfish into the fry tank. The spawning mop is optional but we do recommend them. Goldfish breeding setupīefore beginning your goldfish breeding program, you must first establish your main tank, including filtration, plants, a spawning mop if you want one, and a heater. However, this depends on the space available to you and you may only have room for a single pair in your tank or pond.Ĭheck out this site to see the differences between male and female goldfish. Ideally, you would keep more males than females, as this increases the chance of a successful spawning. Goldfish can usually be sexed from around 1 year of age. You will need to buy slightly older fish or wait for your goldfish to reach maturity before you are able to determine which are male and which are female. – Sponge filter and an air pump for the fry tankĪnd, of course, male and female goldfish! – Plants (preferably live plants, like hornwort, though silk or plastic will do) – Main tank or pond (of a suitable size and with filtration, etc, as usual) To start your own goldfish breeding program you will need the following equipment: You don’t want to leave purchasing your fry tank until the last minute! Goldfish breeding equipment We also recommend purchasing all of the equipment needed to breed goldfish in advance. In order to breed successfully, goldfish need their usual quality care – including plenty of space, good nutrition and excellent water conditions – plus specific temperature changes to induce breeding.īefore starting a goldfish breeding programme, make sure you have enough room for both your adult fish and their fry. Unlike livebearers, such as guppies, goldfish can be relatively difficult to breed in captivity.īut don’t worry! We’re here to help and in this article will reveal all of the conditions you need to put in place to encourage goldfish to breed. Goldfish breeding is not always an easy task and understanding how to breed goldfish properly can be a challenge, particularly for new goldfish-keepers.
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