  We present R-band and H-alpha+[N II] narrow-band imaging of FCC032, FCC206
and FCCB729, three dwarf elliptical galaxies (dEs) in the Fornax Cluster. These
dEs contain significant amounts of ionized gas. FCC032 harbours a large ionized
gas complex, consisting of several individual clouds, a superbubble and a
filament that extends away from the galaxy centre. The ionized gas structures
observed in FCC032 bear a strong resemblance to those observed in more gas-rich
and more fiercely star-forming dwarf galaxies. FCC206, a very low surface
brightness dE, contains one faint extended emission region, and two compact
clouds. In FCCB729, the only nucleated galaxy in this sample, one of the
ionized gas clouds coincides with the stellar nucleus. We derive ionized gas
masses of a few 100 to 1000 solar masses for these galaxies. This brings our
sample of dEs with ionized gas with H-alpha+[N II] narrow-band imaging to five
objects. The ionized gas morphologies in these galaxies range from pure nuclear
emission peaks to extended emission complexes. This morphological diversity
could also indicate a diversity in ionizing processes in dEs with a warm
interstellar medium (active galactic nuclei, starbursts, post-AGB stars,...).
Inside FCC206, four star clusters appear to be on the verge of merging to form
a nucleus in this presently non-nucleated dE. Understanding the formation of
nuclei in dEs could give us important clues to the formation of super-massive
black holes.
