Hector's Goby .... how many?

[Baldguy]

First, I have a 120g tank. Peaceful tank mates. One concern is the yellow watchman goby. Would this be an issue?

Could I have a small group of Hectors or is this a fish that should be alone unless you know you've got a male and female?

 

[Mr. Mojo Rising]

I have a yellow watchman and a hector's in the same tank, they are fine together. I don't know how multiple hectors will act together, its a neat idea though, they are cool little fish.