im gonna have a dat in each tank too in a while and i dont think it really matters what kind of pleco you have in there. mine is going to be in with a big royal and some smaller (20 cm) plecs.
I really woudn't add a gold nugget. It would only be able to stay in the tank for so long before the dat gets to big and eats it. I would go wit something bigger. One pleco that goes with everthing is an L-25 scarlet pleco.
yea. but i dunno about dats, but GNs have a real slow growth rate, so get a bigger one if you do. you could go for a L014, they get bigger and also look great. or if you have the money, get a nice luteus, but they are pricey. basically, any pleco, that cant get eaten.