2 x GSP with white patch on side fin

The forum for puffers that either live or start in brackish biotopes: GSPs, F8s, Ceylons & more.
Post Reply
Puffsmum
Puffer Fry
Posts: 1
Joined: Wed Dec 17, 2025 1:18 pm
Location (country): Scotland

2 x GSP with white patch on side fin

Post by Puffsmum »

Hi,

I have 3 juvenile GSPs, about 1-1.5" in 120g brackish tank.
Today I noticed 2 of the puffers have a white patch near their side fin. One was behaving normally, the other had wrapped his tail round him and looked slightly bloated and was breathing quite hard. Within 5 mins he was up and acting normally. The patch does not seem to be raised or spotty and no fluff.
My tank parameters are:
Salinity 1.009sg ( I'm increasing slowly)
Ammonia is 0
Nitrates 2.5
Nitrites 0
Ph 7.5
Temp fluctuates daily between 24 and 25c
Last water change yesterday, 25% change, raised salinity by 0.001 and dosed tank with 5ml prime.
Any help/insight would be greatly appreciated.

Thanks
Laura
User avatar
Pufferpunk
Queen Admin
Posts: 32933
Joined: Tue May 31, 2005 11:06 am
Gender: Female
My Puffers: Puffers I have kept:
T lineatus
T miurus
A modestus
T biocellatus
C valentini
C coranata
C papuan
C lorteti
DPs
suvattii
burrfish
T niphobles
Location (country): USA, Greenville, SC
Location: Greenville, SC
Contact:

Re: 2 x GSP with white patch on side fin

Post by Pufferpunk »

Hi Laura, [welcome]
Sometimes they get that & it's considered like a bruise. Keep an eye on it. You can add Melafix to enhance healing.
What are you using for substrate?
You are getting sleepy... you only hear the sound of my voice... you must do water changes... water changes... water changes... water changes...

"The solution to pollution is dilution!"
Post Reply