Odd Growth/Clump Base of Angelfish Fins

Does anyone know what this is at base of side fin on Angelfish? Sorry if hard to see, is hard to get a good pic. Basically on one of my Angelfish at the base of both of its side fins where the fin meets the body there is some kind of odd growth. It looks like a clump of white-ish bumps, not like ich but almost like a clump of tiny warts? Not sure how else to describe it. On one side there’s a little red. Normal water parameters and the other Angel and other fish in the tank are not affected (Congo tetras, neon tetras, plecos).
More pics

 

Does anyone know what this is at base of side fin on Angelfish? Sorry if hard to see, is hard to get a good pic. Basically on one of my Angelfish at the base of both of its side fins where the fin meets the body there is some kind of odd growth. It looks like a clump of white-ish bumps, not like ich but almost like a clump of tiny warts? Not sure how else to describe it. On one side there’s a little red. Normal water parameters and the other Angel and other fish in the tank are not affected (Congo tetras, neon tetras, plecos).
More pics

Is this fish new? Angelfish are known to get “stress cysts” when under stressful conditions. I know these cysts very well from previously keeping angels, it happens especially during the first couple days after bringing them home, then they go away

This one looks like it has a lot of cysts though.
Stress cysts are a sort of way the fish tells you there’s something wrong with them, or with the water quality around them. Since your others don’t have them, it may be something specific to this angel.
Have you noticed any change in behaviour? lethargy, not eating, darting away, etc.?

Since there’s so many all clumped together, it could maybe be a disease or infection of some sort, like lymphocystis or epistylis. Keep an eye on it. See if any more of those spots appear anywhere else on the body, and see if the already existing spots disappear. Also look to see if any of your other fish develop the same symptoms. Information like that can help narrow down a diagnosis

I’m not an expert in angelfish health by any means. Hopefully someone with more knowledge comes across this thread. There are many conditions classified by white spots on fish, in the meantime i will help as best i can
Perhaps SouthAmericanCichlids could help?

 

Looks like a virus "Lymphocystis" to me. The Angel might also be in the early stage of Hole in the Head disease as well.
Keep up on the weekly water change schedule & feed quality foods, hopefully the Angel's immune system will overcome the diseases.

 

How big is that? Holy moly! Is that A leopoldi?

I'd agree with either Lymphocyctis, or maybe it's an iridovirus. fin rot generally start at the tips inward, this is from the body outward suggesting it's systemic.

 

Maybe stress Ich? I have a large platinum that I got from the pet shop with bumps on his fins, they never spread to any other fish and his have never gotten worse/better…

 

Is this fish new? Angelfish are known to get “stress cysts” when under stressful conditions. I know these cysts very well from previously keeping angels, it happens especially during the first couple days after bringing them home, then they go away

This one looks like it has a lot of cysts though.
Stress cysts are a sort of way the fish tells you there’s something wrong with them, or with the water quality around them. Since your others don’t have them, it may be something specific to this angel.
Have you noticed any change in behaviour? lethargy, not eating, darting away, etc.?

Since there’s so many all clumped together, it could maybe be a disease or infection of some sort, like lymphocystis or epistylis. Keep an eye on it. See if any more of those spots appear anywhere else on the body, and see if the already existing spots disappear. Also look to see if any of your other fish develop the same symptoms. Information like that can help narrow down a diagnosis

I’m not an expert in angelfish health by any means. Hopefully someone with more knowledge comes across this thread. There are many conditions classified by white spots on fish, in the meantime i will help as best i can
Perhaps SouthAmericanCichlids could help?

Thank you so much. I hadn’t heard of stress cysts before. I have had the 2 angels in that tank for about a year, I’d say, so no, not new. However, they have always been a bit skittish for whatever reason. Sometimes if I walk up to or by the tank too quickly, this one in particular will dart quickly across the tank. Still though eats just fine and otherwise acts normal. I wonder if there’s something I could do to the tank arrangement to make it less stressed if that’s the problem.

How big is that? Holy moly! Is that A leopoldi?

I'd agree with either Lymphocyctis, or maybe it's an iridovirus. fin rot generally start at the tips inward, this is from the body outward suggesting it's systemic.

Yes, it’s a Leopoldi. I have 2, they’re gorgeous and nose to tail they’re about 4 to 4 1/2 inches long.

I’ve been reading about that lymphocyctis and it seems like it could definitely be that. I’m familiar with fin rot but that’s definitely not it, the rest of the fins are fine. I’ll look into iridovirus too thanks!

 

I thought so, that's pretty cool, I haven't seen leopoldi around in a long time!

lymphocyctis is one of other iridoviruses that affet angels. theres a couple. kind of hard to tell which is which.

best course of action is keeping the nitrates as low as you can within reason of course, below 20ppm for sure. and try to feed high quality, well rounded nutrition. dimming the lights more can help if they are skittish, and if they stress from brightness and movement.

either case with an iridovirus,whichever one it is, they just have to ride it out with good nutrition and low stress so they have the best shot at fighting it off and recovering quicker. and limiting the damage. it will take a few months to clear it really, they shouldn't get it a 2nd time once they clear it the first time and it will only kill them if the cells grow on their gills or in or on their mouth and block them from eating or breathing.

They should mostly act pretty normal with an iridovirus except for not looking as fantastic. the other fish probably have already had it, or can't get it. I wouldn't separate the fish for this reason. If they were going to get infected from it, they'd already be infected with it and just waiting for signs of it to appear. it's a virus, and it would be too late to separate the fish.

 

I thought so, that's pretty cool, I haven't seen leopoldi around in a long time!

lymphocyctis is one of other iridoviruses that affet angels. theres a couple. kind of hard to tell which is which.

best course of action is keeping the nitrates as low as you can within reason of course, below 20ppm for sure. and try to feed high quality, well rounded nutrition. dimming the lights more can help if they are skittish, and if they stress from brightness and movement.

either case with an iridovirus,whichever one it is, they just have to ride it out with good nutrition and low stress so they have the best shot at fighting it off and recovering quicker. and limiting the damage. it will take a few months to clear it really, they shouldn't get it a 2nd time once they clear it the first time and it will only kill them if the cells grow on their gills or in or on their mouth and block them from eating or breathing.

They should mostly act pretty normal with an iridovirus except for not looking as fantastic. the other fish probably have already had it, or can't get it. I wouldn't separate the fish for this reason. If they were going to get infected from it, they'd already be infected with it and just waiting for signs of it to appear. it's a virus, and it would be too late to separate the fish.

Very helpful, thank you!