Disease or Fin damage ?

[mjoconr]

I have a dragon blood which has a white mark on its side which is fairly new.

Per the 'Diagnosis of fish Diseases' pinned topic.

1. Description of the symptoms, obvious signs of disease and behaviour of your fish.

The fish has a white mark and maybe has a single damaged fin.

2. List the fish that are exhibiting the above symptoms/behaviour: genus and species name.

Male Dragon Blood with no females in the tank.

3. When and how did the symptons/behaviour start?

About 3 to 5 days.

4. How old are the affected/sick fish?

about 6 to 9 months

5. Have any new fish been added to the tank?

Yes about 20 days ago.

6. Has anything 'special' happened recently?

Weekly water changes only

7. What are the water parameters?

Ph. 8.2

kH. 10

gH. 13

Temp. 27deg C

NH3. 0.05

NO2. < 0.01

NO3. < 0.05

8. Describe the aquarium and its contents.

500L tank with 160L sump which is about 1 year only with about 30 Afrian Cichlid mbuna and peacock.

9. When was the water last changed and how much was changed?

Water change 6 days ago and about 200L

10. When was the filter last cleaned?

The fine pads where changed 10 days ago.

11. What brand and type of food has been used over the past month?

New Era Chiclid with a fix of Red and Black and Extreme Peewee for the smaller fish.

Should I be taking any actions ?

Thanks

[Buccal]

Looks bit over fed there, so maybe revise feeding regime,,,, just revise as I could be wrong.

Either aggression,,,, or something that is overlooked,, gram negative bacteria infection, especially if it appears fast and gets pink in color soon and turn into a sore lesion.

But, this occurs in environments with high waiste amounts, (not cleaning filters enough, crap in substrate and lack of water changes)...

But look,,,, gam negative bacteria exists in almost every heathy aquarium in very small amounts,,,, note that there are many different strain types.

A fish to occasionally fall victim to this is not a issue.

Your water perameters look pretty good, so doubts its a secondary disease due to primary issues, (if it is actually a disease or infection).

It could just be injury.

Wouldn't even worry,, just keep eye on other fish and if effected fish worsens into above description, then quickly cull it and carry on as normal.

[Chuckmeister]

First thing I always do is a salt treatment, unless its something more obvious that you know you can identify.

May or may not help but its always a good starting point.

[mjoconr]

I forgot to mention I had bumped the salt level in the when I saw the problem, but the fin became stuck to the fishes body late on the 30th so I added some Melafix after the water change early yesterday. (I really need to get Refractometer as I have no idea of the salt level in the tank)

The fish is looking much better today. Fin is being used and the white are is much less proud.

I think it must have been some damaged caused by another fish or something in the tank. The fin issue is something I'm not sure about, maybe there is a little fin rot in the tank the Melafix should help with that.

Only time will tell if its recovered.