You are here:

Fish/goldfish blisters


Sab wrote at 2012-07-18 13:12:44
That is a ping pong pearlscale, so technically it isn't overweight, thats just it's shape.  

AB wrote at 2012-11-28 21:40:33
Hi Angela

I'm sorry but I think Ron's answer was very unhelpful.

My fish also has these symptoms and has had for about three weeks.  He is three years old and is definetly not overfed and is well cared for.

Unfortunately I've not been able to find a cure for him yet so if you discovered one please let me know.

And Ron, perhaps in future you should consider whether the swelling of the fish is a sympton rather than just dissing the poor lady !  

Maxchan wrote at 2013-01-15 21:05:48
Hi Ron, it looks like you have no idea what type of fish that's in the picture. That particular fish is called pearl scale (do a google search) and the body is round - kind of like a fat fish and it's born that way.

I have 9 pearl scales, and sometimes they do develop air bubbles on their body - but these bubbles last 1-2 days and it will go away by itself. I did not do any treatment, except daily 100% water change, and it quite effective!


All Answers

Answers by Expert:

Ask Experts


Ron Coleman


I am an expert on cichlid fishes, particularly New World cichlids. My broader expertise includes the behavior, ecology and reproduction of fishes in general. (I am NOT an expert on Goldfish). Please do not use abbreviations, such as "my GT has a swollen eye" because I don't know what a "GT" is. The more clearly you can explain your question, the better chance I have of understanding what it is that you seek. I keep fishes both as a scientist and as a hobbyist and I currently maintain about 140 aquariums.


I am an Associate Professor at the California State University, Sacramento in the Department of Biological Sciences, and I run a website, called the Cichlid Research Home Page . I also write for many popular aquarist magazines, and I was editor of Cichlid News magazine for several years. I am a scientist and I spend my time teaching fish biology, ecology, behavior and evolution and doing research on the reproductive biology of fishes, particularly cichlids. I do research in the laboratory and in Costa Rica, Nicaragua and Mexico. My main interest is understanding the evolution of parental care in fishes. I am interested in encouraging greater public awareness, understanding and participation in science.

Cichlid News, Tropical Fish Hobbyist, Freshwater and Marine Aquarium, Science, Behavioural Ecology and Sociobiology, Copeia, Canadian Journal of Zoology, Trends in Ecology and Evolution, AUK, Environmental Biology of Fishes

PhD (Toronto, 1993) MSc (Simon Fraser, 1986) BSc (British Columbia, 1983)

©2017 All rights reserved.