Red Blobs On Hoplo Catfish

[LucyB]

One of my two Hoplo Catfish seems to have about 4/5 red blobs on it, and she has been more lethargic than usual (except at feeding time) I do 50% weekly water changes, and the tank has been up and running for over a year. I can move her to a separate 27 litre tank if I need to. Please can you tell me how to treat it, what it is, and how it is caused, thank you

nitrite: 0
nitrate: 10
pH: 7.5
Ammonia: 0

EDIT: Can I use aquarium salt and internal parasite meds to cure it? Thanks.

 

[LucyB]

Help anyone? Please?

 

[ZoddyZod]

Hello,

Can you complete our emergencies form, this might help to kick-start the discussion and find what the issue is - it is linked below

http/www.fishforums.net/index.php?/topic/2330-please-read-before-posting-to-emergency-section/

 

[LucyB]

Tank size: 100 litres (4 foot)
nitrite: 0
nitrate: 10
pH: 7.5
Ammonia: 0
tank temp: 29 C

Fish Symptoms (include full description including lesion, color, location, fish behavior): about 5 Red blobs, one on each gill, lethargic, hiding a lot, loss of appetite.

Volume and Frequency of water changes: 50% every week

Chemical Additives: None (except dechlorinator obviously)

Tank inhabitants: In my sig (I know, I need more zebra danios, I'm getting some soon)

Recent additions to your tank (living or decoration): Cabomba plant

Exposure to chemicals: No

Digital photo (include if possible): Can't get a good one, she is constantly hiding and the blobs are quite small.

 

[LucyB]

Please help guys, I really don't know what to do