neon goby pair

[christyf5]

From my experience two doesn't work. I had two neons in a 90 gallon, one constantly chased the other into the overflow and eventually he disappeared. Then I tried a sharknose goby in with the neon. The sharknose harassed the crap out of the neon and eventually the neon made it into the sump where I rescued him and put him in a 5 gallon nano tank. SamW had an interesting video of aggression between neon gobies that was rather unsettling to watch, one got the entire head of the other in its mouth.

So no I wouldn't suggest more than one especially in a smaller tank.