| 单词 | Polypterus | 
| 释义 | Polypterusnoun  Po·lyp·ter·us   pəˈliptərəs   : the type genus of Polypteridae that comprises primitive fishes of the larger rivers of tropical Africa having an elongate body covered with rhombic enameled scales, a dorsal fin reduced to a series of finlets, pectoral fins taking the form of a rounded lobe supported on a short arm, and an air bladder functioning as an accessory breathing organ   see bichir, erpetoichthys   | 
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