black pl*co pix ?

Hi all, about a week or so ago there was a post about feeding zuchini to
pl*co’s by method of fastening it to the glass with a suction cup. At that
time someone posted a site to some pix of pl*co’s feeding off a slice of
zuchini fastened in the afore mentioned method. In one picture there was a
black pl*co with white spots that got my attn. But I forgot to save it and lost
the url. If anyone remembers the site address or knows the name of this
particular type of pl*co please respond to this post or send me an E-mail
T.I.A. as always and regards Art