90g American Cichlid setup

SLB1976

Feeder Fish
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Aug 11, 2019
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Thank you all for the suggestions and feedback. I will be just sticking with 1 Oscar in my 90g. As stated I’ve been with my always overstocked African cichlids for over 15 years, and always took pride in my fish tanks with proper maintenance. Hence why I believe over-filtration is never a bad thing.
 
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twentyleagues

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Thank you all for the suggestions and feedback. I will be just sticking with 1 Oscar in my 90g. As stated I’ve been with my always overstocked African cichlids for over 15 years, and always took pride in my fish tanks with proper maintenance. Hence why I believe over-filtration is never a bad thing.
Over filtration is not bad. But like I and others have said a 90 for a full grown oscar is like solitary confinement. If you go by rule of thumb (hate that saying) it 1.5× width and 3×length. So say an adult O is 15" you need a minimum width of 22.5" and 45" in length. When I stated a 120 I meant a standard 120 or a 4×2×2 tank not the 6' one, to narrow. Obviously a 180 would be perfect.
 
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FINWIN

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Its "funny" how this thread always seems to develop. It just keeps coming back over and over.
You will get one of two answers on this yes or no. And alot of reasons why. I personally believe that a 90 is to small in width for a full grown Oscar to be happy for life, but like I said and others have also with proper water changes and filtration you could do it. You can do alot of stuff but I wouldnt recommend some of it. You could live and survive in a 3×3×8 room but you wouldnt be happy. If we doubled the size youd be more happy. Until we became roommate's but may be happier then in the 3×3 still.
Can you keep sn Oscar a GT and some Acara? yes. Will you hate life with all the waterchanging? probably, will you have casualities? probably, will it be easier for your fish to get sick? possibly. I have also seen the oscar in a 55 and in a 75 and in a 90 they seemed fine......
I have also seen a solo oscar in a 120 and a 180 those were the best looking Os ive seen ever. A true wet pet happy to see people no hth no scars no tattered fins.
So the point is can it be done? Yes. Should it.......?
The "Oscars in a 55" stories rarely have a follow up. Wonder why.
 
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SLB1976

Feeder Fish
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Aug 11, 2019
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Not sure what Oscar 55 gallon story you're referring too, but I agree, but I am comfortable in putting a single Oscar in a 90g. Or a Green Terror with a few tank mates like Acaras.
 
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