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Discus fish rear their fry by allowing them to feed continually on their own skin mucus for the first few weeks of life, but whenever the fry have bitten one parent for about ten minutes they are sent off to bite the other.

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Discus fish rear their fry by allowing them to feed continually on their own skin mucus for the first few weeks of life, but whenever the fry have bitten one parent for about ten minutes they are sent off to bite the other.

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