Mixing gobies

[steelrain]

Could I add a Purple Firefish goby in with my yellow watchman?
Or should gobies be kept one per tank?
75 gallon with 30 lbs of live rock.
livestock includes:
5 green chromis
2 Ocellaris Clowns
1 yellow watchman goby
Besides the firefish I also plan to add a Fridmani Pseudochromis
OR a Royal Gramma.

 

[nicetry]

You'd probably be fine adding the firefish, but I'd also ramp up the amount of LR you have, as both fish need hiding spots. I'd also rethink the pseudochromis. They often go after peaceful bottom dwelling fish and I'm guessing the watchman/firefish might not fare well. The gramma should be okay as it will stake out a place ina rock crevice but rarely venture to the bottom where it would bother the others.

 

[lion_crazz]

The gobies should have no problem living with each other. My engineer and diamond get along fantastic in my 75.
As suggested though, you definitely want to get more rock in your tank.
Also, I would probably go with the gramma over the pseudochromis for aggression issues.

 

[gati]

complety agree with lion crazz