俗稱的虎魚,又稱為三間虎(Datnioide)可分為5大類:
(1) 泰國虎 (粗間虎) Datnioides Pulcher
其中可細分為兩種, 他們分佈地於湄公河, 南湄南昭披耶河, 緬甸及越南, 體長18-24吋, 泰國虎現已受泰國出口管制及保育。
A.暹羅虎 Siamese tiger (ST) 俗稱泰國虎
B.柬埔寨虎 Cambodian tiger (CT)俗稱日行虎
(2) 泰北泰國虎 (幼間虎) Datnioides undecimradiatus 細紋泰國虎(看動線粗細即可輕易辨別)。分佈地於湄公河, 體長18-24吋。
(3) 印尼虎 Datnioides microlepis
分佈地於印尼的蘇門答臘, 西加里曼丹境內的卡布阿斯河及渤泥, 體長18吋。
(4) 新機內亞虎 Datnioides campbelli
分佈地於新機內亞及澳洲北部, 體長18-24吋。
(5) 銀老虎 (六間虎) Datnioides quadrifasciatus
分佈地於印尼及新機內亞, 體長12吋。
只有新機內亞虎及銀老虎是河口性的魚, 其他三種都是純淡水的魚種。
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