Fungus or irritation? Watchman Goby

[nanocube24]

I have a Yellow watchman Goby that after quarantine for about 10 days was put into my tank. He is the first fish in this tank and besides the snails and hermits there is a fireshrimp.

I noticed this white area on his side a few days ago which doesn't seem to be cotton like. It looks as if it is pigmentation to my eyes but I am hoping others with more experience can help.

First it is a 29G bio cube with all water parameters doing good. Porter is eating and looking otherwise normal except for the white area. The one thing that makes me think it might be irritaion is that the fireshrimp likes to clean him. He starts his cleaning right at the point of irritation and works his way back to the tail.

He acts normal as far as I can tell.

Any ideas?

 

[nanocube24]

Anyone at all have any ideas?

He still seems to be doing great. eating fine and breathing normal.

?

 

[nanocube24]

Updated picture

Updated picture

Here is a recent picture showing either an irritation from the fire sgrimp cleaning him or a fungus. Does anyone have and thoughts?

Water still great and he is eating and swimming like normal.

Thanks

 

[Percula9]

Not an irritation. Treat with antibiotics in quarantine. True fungus in fish is rare. Treat as if it's a fungus anyway. Add garlic to his food.