fish disease

I have a blue damsel that has developed 2 grey patches symetrically on each side. it also looks like his fins are rotting. last night and today he has hidden away and has not really moved. I have 3 crabs, 2 snails and 2 peppermint shrimp that all seem fine although i dont really know how to...

My true percula has some strange things around his face. he has been less active and i don't see him eat its been like this for the past few days. i already gave him a freshwater dip for 5 min and he looks a little more active but those things are still there.

I have a 7 year old purple tang that suddenly stopped eating. I have tried several foods including live brine & garlic additives but to no avail. Can anyone tell me if they might know what is causing this?

I just bought a sailfin tang from the LFS. He is eating well, swimming happily, and seems fine. My yellow tang picked on him a little bit at first but now he doesn't. I was looking at him last night and he has 3 or 4 white spots, not real bright white but noticeable, on his tail fin. He also has...

Hi All! So Nina, my little blue tang looks so bad! it came out of nowhere too! I tried to take pics, but she's so quick it's hard to get a good one. I know that they're very susceptible to ich..but still..her looking fine one day and not the other makes me sad. I can't give you water specs..and...

I am new to the site and trying to post/ask my first question. I have a longnose butterflyfish with large white growths/granulomas on the scales near its tail and a small ones on the pectoral fins. Does anyone know if these are fungal or parasitic and how to treat? The fish is in a 150 tank with...

so i just got this mandarin two days ago and hes got this mucus all over him, it literally looks like spit, all over his body, mucusy, tiny bubbles, etc.... anyone know whats going on? im not sure if it was on him when i got him or not cause i had lights out and had to run so i just let him out...

I have had a blue dot jawfish for approximately 2months give or take. Yesterday while doing my monthly water change I noticed that He was in distress, and his body showed white slotches. while at work today my wife told me he died, and took this picture of him. The rest of my tank residents...