Can someone help me and say why my Oscar has theese injurys I’m afraid it’s hole in the head

kno4te

MFK Moderator
Staff member
Global Moderator
MFK Member
Dec 24, 2005
18,758
21,473
480
USA
I’d say looks like hole in the head.
 

kno4te

MFK Moderator
Staff member
Global Moderator
MFK Member
Dec 24, 2005
18,758
21,473
480
USA
I continue with water changes at least twice a week. Goal would be to keep your tank cycled and nitrates below 20 ppm. I’d even consider adding some tannins to the tank to keep the water, soft and acidic if you have hard water. Gold would be to be consistent with your water quality.
 

kno4te

MFK Moderator
Staff member
Global Moderator
MFK Member
Dec 24, 2005
18,758
21,473
480
USA
how would be the best way to help him, I have started to change water 30% to 50% every other day and added some medicine does this help
What meds did you add?
 
  • Like
Reactions: tlindsey

Davidatug

Feeder Fish
May 10, 2024
4
2
3
20
I continue with water changes at least twice a week. Goal would be to keep your tank cycled and nitrates below 20 ppm. I’d even consider adding some tannins to the tank to keep the water, soft and acidic if you have hard water. Gold would be to be consistent with your water quality.
What meds did you add?
Leaves from the cattapa tree I read it provides good health
 
  • Like
Reactions: kno4te

jjohnwm

Sausage Finger Spam Slayer
MFK Member
Mar 29, 2019
4,237
10,828
194
Manitoba, Canada
This fish appears to be very young, certainly less than a year old? Isn't hole in the head more typically seen in much larger, older specimens?

Those marks look to me as though the fish got stuck in an ornament or abraded itself on sharp rocks or something similar. They seem to have flaps and shreds of tissue hanging loosely on them. The pics I have seen of HITH usually look like eroded craters, smooth and with no flaps of skin at the edges. Just an opinion, I have no personal experience with it.

duanes duanes RD. RD.
 

duanes

MFK Moderators
Staff member
Moderator
MFK Member
Jun 7, 2007
21,471
27,362
2,910
Isla Taboga Panama via Milwaukee
Looks like HITH to me too.
And while meds are a pretty good temporary bandaid, unless you get to the root of the problem, HITH will just continue to reinfect, over and over.
To get to the root, water changes, lots of them, and (as suggested above) at least 50 % twice per week forever.
What water changes do is dilute chronic disease causing nitrate, which it seems oscars are susceptible to.
And if your water is hard with high pH, the bacteria that cause HITH are more virulent and ubiquitous.

In the rivers oscars naturally inhabit, nitrites are usually undetectable, and because the water is also soft with low pH, those HITH bacteria are not as prevalent, so no need for oscars to build resistance to them.
To me any nitrate level above 5 ppm is too high, so I maintain undetectable nitrate levels in my tanks
unless of course your water is naturally soft with pH below 7.
Below is how my average nitrate test comes out (the tube on the right)
IMG_0234.jpeg
Below a test of the water where I catch my cichlids
IMG_1766.jpeg
 
Last edited:

Davidatug

Feeder Fish
May 10, 2024
4
2
3
20
Looks like HITH to me too.
And while meds are a pretty good temporary bandaid, unless you get to the root of the problem, HITH will just continue to reinfect, over and over.
To get to the root, water changes, lots of them, and (as suggested above) at least 50 % twice per week forever.
What water changes do is dilute chronic disease causing nitrate, which it seems oscars are susceptible to.
And if your water is hard with high pH, the bacteria that cause HITH are more virulent and ubiquitous.

In the rivers oscars naturally inhabit, nitrites are usually undetectable, and because the water is also soft with low pH, those HITH bacteria are not as prevalent, so no need for oscars to build resistance to them.
To me any nitrate level above 5 ppm is too high, so I maintain undetectable nitrate levels in my tanks
unless of course your water is naturally soft with pH below 7.
Below is how my average nitrate test comes out (the tube on the right)
View attachment 1542092
Below a test of the water where I catch my cichlids
View attachment 1542093
thanks so much for the information i change water almost every other day and my PH level is at 7 and i have added a bit more bio filter
 
zoomed.com
hikariusa.com
aqaimports.com
Store