oscars 'n aros

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cmersits

Feeder Fish
MFK Member
Aug 1, 2005
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Yorktown, New York
kind of a stupid question, but I honestly don't know the answer. Can you keep a silver aro with an oscar (same sizes of course)? I kind of feel stupid for asking this lol
 
Depends on the temperaments of the specific specimens. It would probably be better for the aro to be a bit larger, maybe by 2" or so.
 
Course you can. Rallysman here has a silver with a large oscar in a 300g tank...they are doing fine. There is always a small window of error depending on the fish's character, but in my years I have never had an agressive oscar. The Aro won't care for them...
 
NO, NO, NO, NO i had my 7 inch arow with my 2 3 inch oscars and the beat my arow up, i mean missing scales, ripped fins, and they are peaceful O's they lived with tetras until i sold the O's
 
Here is my advice for the oscar w/ an aro query, as posted in another thread.

Oscars are no good with aros in my experience. Both being extreme eating machines, fighting for food can get a little violent. I have no proof but am 99%sure that my oscar, that was only in my tank to nurse back to health, killed my aro. <---Not cool at all, but to each his own. Oscar was 4", Aro was 9".
 
So, depends on fish attitude, like I said. A few here are successful with this pairing, so it's up to you to try and see...
 
I have a VERY aggressive oscar that lives in harmony with an arrowana, both are 10", the oscar was 10" when the arrow was 3" and they live fine.

It is a 125 gallon aquarium. I wouldnt worry.
 
I've got a pretty strange mix with my aro and they all keep to themselves.
12" jag
10" oscar
13"clown knife
16" clown knife
14" Albino channel cat
24" arowana
17" chinese perch
 
Most 10" oscars would gobble up any 3" fish, especially an aro which doesn't have a lot of bulk. What rallysman has is enough large aggressive fish to spread out their aggression so that they are able to not really harm each other. I think it is sometimes referred to as "controlled overcrowding", not meaning that rallysman's tank is overcrowded - looks just right in the video.
 
The one thing I have not seen mentioned here is the size of the tank. Obviously the larger the aquarium, the higher likelihood that you will be able to mix them successfully.

Also, I personally believe that you will have better success with an aro that is already at or near 12" in length. The smaller ones tend to be pushovers and can be quite sensitive to aggression from tankmates.
 
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