The Pearlscale is characterised by the domed scales across its very round body,  In other regards the shape of the Pearlscale is similar to the Fantail in its dorsal contour and tail carriage.  This variety is frequently seen in pet shops but often with some form of hood on the top of the head but this is not accepted as part of the recognised standard.  Similarly, a lot of imported fish carry their tail too low, with the top edge of the caudal fin barely above the horizontal.  The Pearlscale is recognised in both metallic and nacreous scale types though the metallic variant is relatively rare.  The challenge with the nacreous strains is maintaining the desired blue, though here imports have helped.  The variety has its devotees but is not common as a show fish, despite its popularity commercially.