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Coyfish cannot be kept in an aquarium, but it's not because of the answer below. It's because they are so badass they will break through your measly glass and run free as they should be, you fool! And if for some reason he cannot manage to break the glass, a passerby will because they will notice how amazingly badass he is and want to set him free. End of Story.

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Hi. koi fish can not be kept in a aquarium as they grow as long as 36 inches!!! only suitable for a 1000 gallon pond.

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16y ago

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