Gorgeous vintage Swedish Stromberg 'fish' art glass vase design B996. The piece is etched Stromberg B996 plus some other Numbers which I cannot determine on the base.
The vase measures 16 cm tall x 12 cm at its widest diameter and is in excellent vintage condition. There is some age related wear on the base plus a tiny mark on the vase shown in the last picture. This is only mentioned for accuracy and does not detract from this lovely piece.