About HANAZAKI KATSUJI
About 芥川緑地資料館
About HATOOKA KIYOTAKA
About 大阪市自然史博物館
About 大阪市立自然史博物館自然史研究
About Pisces
About habitat distribution
About field study
About Gambusia
About Beloniformes
About river
About Cypriniformes
About Siluridae
About freshwater fish
About Osaka prefecture
About Cypriniformes
About Animal ecology in general
About 大和川
About 水系
About 石川
About 魚類
About 現状