ABSTRACT.In this paper we introduce and study fuzzy quasi \( e \) (resp. \( e^{*}, \alpha, \beta, \delta \) and \( \delta p \))-open sets, fuzzy quasi \( e \) (resp. \( e^{*}, \alpha, \beta, \delta s \) and \( \delta p \))-closed sets, fuzzy quasi \( e \) (resp. \( e^{*}, \alpha, \beta, \delta s \) and \( \delta p \))-connectedness between fuzzy sets, fuzzy quasi \( e \) (resp. \( e^{*}, \alpha, \beta, \delta s \) and \( \delta p \))-separated sets in fuzzy bitopological spaces.