Even though Bettas do well in waters low in dissolved oxygen, that does not mean they require less oxygen than other fish.
即使斗鱼做好水域溶解氧谷底，这并不意味着他们需要比其它鱼类的氧气。
Even though Bettas do well in waters low in dissolved oxygen, that does not mean they require less oxygen than other fish.
即使斗鱼做好水域溶解氧谷底，这并不意味着他们需要比其它鱼类的氧气。
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