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Livebearers Guppies With the possible exception of convict cichlids, there is arguably no tropical fish easier to breed than guppies. There’s an expression in the aquarium hobby – ‘to breed guppies, just add water’. And it’s a surprisingly accurate expression. All it takes to breed guppies is moderately clean water and at least one male and female (though it’s … [Read more...] about The Easiest Freshwater Fish to Breed in an Aquarium