Strange white mark on my Algae Blenny

[Nheko]

Today I noticed that my Algae Blenny has a strange white spot on one of his fins. Could it be ich?

 

[Timfish]

No, it's too large to be ich. It's also highly unlikely there would just be one spot. Generally, ich will look like salt has been sprinkled on a fish and velvet will look like a light dusting of baby powder. Both will be easily seen on fins when it might be hard to see on the body of a fish. It might be limphosistis but that's just a guess.

 

[vetteguy53081]

Today I noticed that my Algae Blenny has a strange white spot on one of his fins. Could it be ich?

This is likely a fin ray issue which heals like lympho does and can even be a grain of sand

 

[Nheko]

This is likely a fin ray issue which heals like lympho does and can even be a grain of sand

Turned out to be a grain of sand. Thank goodness! Thanks for all your help.