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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

A shoal of tetras? A well-planted Amazon tank with a large shoal of neon tetras looks amazing. The bright neon blue and red against a green leafy background has got to be one of the best combinations in fishkeeping. It is no wonder that these are one of the most popular aquarium species. But as with all shoaling species, tetras need to be kept in a group to be happy. The larger the better (without overstocking your tank). Six individuals is usually seen as the absolute minimum in a shoal, but more is better. The effect of a large tank with a shoal of 30-40 neon or cardinal tetras is simply stunning


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