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Fish Breeding in the Aquarium

Spawning Methods

Fish species are incredibly diverse, and their reproductive methods are too. Most will breed happily with no intervention, and if there are no predators around, and ample food most should grow up into strong adult fish. Most freshwater species lay eggs, though some give birth to live young (livebearers). The parental care shown varies enoumously. Characins scatter their eggs, and eat any they find, also eating any fry, whereas some cichlids will guard their eggs, and fry in their mouths for weeks. At least one species of catfish cleverly tricks cichlids into mouthbrooding its eggs. Similar to the cuckoo in the bird world.

A lot of fish have never been bred in aquaria, however many have. Here are the main fish breeding methods

Marbles For egg scatterers. This is a great way to breed tetras, danios and other egg scatterers.

Spawning mops For plant spawners. This is a great way to breed killifish and rainbowfish.

Spawning cave For cave spawners.

Peat substrate For substrate spawners. This is a great way to breed annual killifish.

Long term Fry grow up with the adults. Typically used for livebearers and less predatory egg layers.








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Fishkeeping Facts and Tips

Many aquarium species are territorial; these should only be kept with other fish in a larger tank with space for each. In a well-stocked dealers tank there is no chance to set up a territory, but problems will arise once introduced into your home community aquarium


Have a look at some of these related sites

killifish information
paludarium information
cichlids for sale