Radial number density profile of the LSB dwarfs in our sample (red line) is compared with that of all galaxies in FCC (black line). We plot also the ultra compact dwarfs from Gregg et al. (2009; purple line). Plotted separately are also the high surface brightness (with mag arcsec^-2) and LSB ( mag arcsec^-2) galaxies from FCC, indicated by semi-dotted and the dashed lines, respectively. The results of the K-S tests comparing our sample distribution with those of the other surveys are listed in the lower right corner of the lower panel.