Oscar With Large Blister

[Spishkey]

any idea what this is and how to treat it? my lady oscar has a huge blister type of bump on her head. it was not there this morning but after coming back in this afternoon it has appeared.

ammonia 0
nitrite 0
nitrate 10

eating ok, still acting normal but the blister is huge. i first thought its maybe a burn? but there is no heater they can burn themselves on and the lights have not been on this morning.

sorry for the blurry pics but its the best i can get (the pits and scarring are old scars so please ignore them on the pics, its the big white bulge thats new)

 

[Spishkey]

unfortunatly i have to leave for work in 35mins, but if anyone knows of anything that this could be please let me know, i can try and check back on here from work but cant reply from there

 

[england]

looks like shes scraped it on something, probally in one of there tussles,,,,,,

mine had something similar a few months back, keep up on some very good water changes

 

[Davo86]

unfortunatly i have to leave for work in 35mins, but if anyone knows of anything that this could be please let me know, i can try and check back on here from work but cant reply from there

have you recently done either a large or a cold water change?
Does it look like a gas bubble?

I would increase aeration in the tank and leave the tank light off for now,

 

[WILDER]

Is the blister beneath the skin or on top.
What colour is the blister as the board playing up.

 

[Spishkey]

the 'blister' looks liquid filled and is soft to the touch, it is just beneath the skin (like when you get a blister on your heel!) it doesnt look like a scrape though?
have had aeration increased and kept lights off.
also i noticed my sydontis is 'sucking' on the side of the oscars, could it have caused this damage??

someone has mentioned 'Furunculosis (Aeromonas Salmonicida)' on another site. do oscars get this? off to do a search on it now as ive never heard of it.

 

[WILDER]

Bubbles beneath the skin can be gas bubble desease so take a look at the link and scroll down to gas bubble desease to rule it out.
http/www.flippersandfins.net/pop-eye.htm

 

[WILDER]

Furunculosis



Symptoms:

Fish may present with frayed and inflamed fins, raised bumps underneath the scales which rupture releasing pus, and may also have large bleeding ulcers. There may also be hemorrhages in the internal organs, skin, gills, fins and muscle tissue. Not all symptoms need be present.



Cause:

Aeromonas bacterium, which infects a fish via skin parasites or when it ingests feces from infected fishes or feeds on the remains of dead fish.



Treatment:

Ensure that your water conditions (e.g., Ammonia, Nitrite, pH, Nitrate levels, and water temp.) are within their proper ranges. If not, perform a water change and/or treat the water accordingly. If your fish can handle it, raise the water temperature to 80 degrees or a little higher. Furunculosis is generally a cold-water disease; higher temperatures may help to eradicate the illness. Infected fishes should be isolated because when the lesions rupture, bacteria are dispersed throughout the water, leaving all fish at high risk of infection. Furunculosis can be highly infectious. All fish, including those not yet showing visible symptoms, as well as the aquarium they inhabit should be treated. Treatment should include one of the following: Triple Sulfa, Furacyn, Nitrofura-G, E.M. Tablets or Furan-2. The use of medicated food is also prudent. In addition, if parasites are suspected all fish as well as the aquarium they inhabit should be treated with an antiparasitic medication. Adding an appropriate amount of salt to the water may also be helpful.