[カワスズメか, kawasuzume ka] (n) Cichlidae (family of over 1, 300 identified Cichlid fishes in the order Perciformes exhibiting fusion of the lower pharyngeal bones into a single tooth-bearing structure)
[シクリッドか, shikuriddo ka] (n) Cichlidae (family of over 1, 300 identified Cichlid fishes in the order Perciformes exhibiting fusion of the lower pharyngeal bones into a single tooth-bearing structure)
[あっかはりょうかをくちくする;あくかはりょうかをくちくする, akkaharyoukawokuchikusuru ; akukaharyoukawokuchikusuru] (exp) (id) (See グレシャムの法則) when there is a legal tender currency, bad money drives out good money (Gresham's Law)