A coral frag (fragment) is a small piece of coral that has been separated from a larger coral colony and grown independently.
This method allows coral propagation and sustainable reef aquarium trade.
A frag is essentially a clone of the original coral colony and will grow into a full coral over time.
Why coral frags are popular
Coral frags are popular among reef aquarists because they:
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are easier to ship
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adapt faster to new aquariums
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are more affordable than full colonies
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allow coral propagation
How coral frags grow
Under stable conditions coral frags gradually grow and form new skeleton structures.
Growth depends on:
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lighting
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water flow
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nutrient levels
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water chemistry
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