Hi Beeker, Sparklers are great little fish. I love mine! The are shy and can get aggressive during spawning, like most fish.
I'm not sure about the compatablity of Sparklers and
DG's. Besides, DG's have been having a lot of problems lately.
The Thick Lipped Gourami is supposed to be hardier and not as aggressive as DG's. Mine resembles a Honey in looks but gets a little larger.
I just got him a few days ago and so far he's been fine with my celetial pearl danios.
Time will tell, I guess. But again, I don't know about mixing Gourami species.
My Sparklers are in with cardinals glowlights and C. habrosus. They chase the others away during spawning, but there's never any real aggression or damage.
They did get too aggressive with a 3rd Sparkler and a Guppy, both of them had to be moved to another tank.
My GBR's were fine with Cardinals. Sadly, I had no luck keeping them (GBR's)alive.