Our diamond goby has been acting weird the past couple of days. We have had him for about 8 months and he has grown a ton but seems to be short of breath and less active in the last couple of days. Last night he seemed 'frozen' at a part of the tank he is not usually in, mouth wide open, not moving. He did not eat when we fed this morning (frozen - brine shrimp and spirulina) but usually does. We checked nitrate and all of our levels seem normal.
We are first-time posters and new to all things related to fish and saltwater tanks -- we moved into a house a year ago with an established (~ 4 years) 120-gallon tank.
He was the first fish that we added to the tank so we hope we can do something to keep him alive :confused-face: Thank you in advance for your help!
We are first-time posters and new to all things related to fish and saltwater tanks -- we moved into a house a year ago with an established (~ 4 years) 120-gallon tank.
He was the first fish that we added to the tank so we hope we can do something to keep him alive :confused-face: Thank you in advance for your help!

Thank you
