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Regular water changes prevent problems make it part of your routine!
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SW clown fish are protandrous hermaphrodites -born male but can later change into females
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When a sound wave is emitted underwater, the chain reaction is longer among the closely packed molecules allowing the vibration to travel, instead of dissipating, like it does in the air? So, tapping on the glass of an aquarium is quite painful to the fish...
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Okinawa expo aquarium in Japan is one of the few aquariums today to boost having the largest fish- the Whale Shark. But they are not the first way back in 1934 the first Whale Shark was displayed at the Izumito Sea Paradise Aquarium. The record length of a whale shark is 59 feet.
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Fish don't have ears, yet they hear (or feel) vibrations along the "lateral line" on their bodies
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Fish that live more than 800 meters below the ocean surface don't have any eyes
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Four-eyed fish do not really have four eyes. Rather, each eye can see in two directions, allowing the fish to see both above and below the surface of the water at the same time.
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Sponges can never be exposed to air. They must be bagged underwater, it a sponge is exposed to air it will die.
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The first aquariums were heated by placing a oil lamp under them
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