Oscar is bloated, pop-eyed, lethargic, has protruding anus.

[MichaelAngelo]

Hello Everyone, thanks in advance for the help.

Got back from a 3-day vacation today and found my favorite oscar swimming at the bottom of the tank. It has bulging eyes and a protruding anus. Also, the fish looks a bit bloated. It doesn't eat.

A few weeks ago my water change schedule was once every 2 weeks for 2 months, and the tank got dirty. So I'm suspecting it's bacterial....

Information:
120G, freshwater, set up for nearly 1 year, 2x Oscar (12" one is sick, 10") 2x silver arowana (16" and 12"), half a year ago the oscars were quarantined for HIH and recovered, 80F, no live plants, Fluval FX5 last cleaned 4 months ago, no lighting with a bit of natural sunlight through adjacent basement window, weekly water changes, fed 3x weekly with cheap food.

Thank-you once again for the help!

Michael

 

[knifegill]

What are your water parameters? Ammonia, nitrIte and nitrAte? This does sound like a bacterial infection, but you've also got to get to the root of what made your Oscar succumb to it.

 

[MichaelAngelo]

Thanks for the help so far. I'm guessing I should quarantine and use some sort of antibiotic?

 

[Ray'Oconner]

U Should.. Take Care Of the Fish my fren..

 

[mrmojorisin]

i need help with my oscar massive bloat looks like a giant golf ball im his gut

 

[nomad]

1/3 daily WC and Epsom salt.

 

[mrmojorisin]

i dont know how to start a thread
need advice asap

 

[nomad]

i dont know how to start a thread
need advice asap

do what I said above.

 

[Ray'Oconner]

1/3 daily WC and Epsom salt.

i dont know how to start a thread
need advice asap

Info was given by nomad already..

 

[mrmojorisin]

my water perameters are perfect
0 ammonia
0 nitrite
7.6 ph
just did a huge water change
he acts healthy just wondering when he gunna burst
and theres always a little aqarium salt in my tank