Complete Life Cycle of Arowana Fish - The Arowana Father
骨舌魚科（學名：Osteoglossidae），是一種下頜具鬚，體側扁，腹部有棱突的古老淡水魚種群，屬於骨舌魚目，廣泛分佈在南美洲，澳洲以及東南亞的熱帶和亞熱帶地區。因為其體形長而有鬚，酷似中國神話中的龍，故俗稱龍魚，在東南亞地區是非常受歡迎的一種觀賞魚。
Arowanas are freshwater bony fish of the family Osteoglossidae, also known as bony tongues (the latter name is now often reserved for Arapaimidae).
In this family of fish, the head is bony and the elongated body is covered by large, heavy scales, with a mosaic pattern of canals. The dorsal and anal fins have soft rays and are long based, while the pectoral and ventral fins are small. The name "bonytongues" is derived from a toothed bone on the floor of the mouth, the "tongue", equipped with teeth that bite against teeth on the roof of the mouth.
The arowana is a facultative air breather and can obtain oxygen from air by sucking it into its swim bladder, which is lined with capillaries like lung tissue. Wikipedia
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