Add an Oscar?

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MooseMann

Exodon
MFK Member
Nov 14, 2022
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I have a 265 tank with 4 tiger moray eels, fire eel, mini marbled stingray, hystrix stingray (both fully grown at about 9-10 inches), 3 archerfish, and 2 snakehead gudgeons. Everyone is getting along great, I’m wanting to possibly at a small 2-3 inch Oscar. I have heard of you add them small enough in a big enough tank they will grow up with the other guys and not be aggressive with the others. Should I try adding one? Or you think there’d be future issues? Thanks!
 
I have a 265 tank with 4 tiger moray eels, fire eel, mini marbled stingray, hystrix stingray (both fully grown at about 9-10 inches), 3 archerfish, and 2 snakehead gudgeons. Everyone is getting along great, I’m wanting to possibly at a small 2-3 inch Oscar. I have heard of you add them small enough in a big enough tank they will grow up with the other guys and not be aggressive with the others. Should I try adding one? Or you think there’d be future issues? Thanks!
how big are the eels and snakehead? the oscar can become a nice snack if they are big. BTW i think you are already fully stocked and might be overdoing it already.
 
I prefer tanks that are on the heavy side stocking wise, but even I must admit that you are pushing it with your level of stocking. You already have a lot going on there, and in any case, as mentioned, a tiny oscar with that lot might not end good.
 
how big are the eels and snakehead? the oscar can become a nice snack if they are big. BTW i think you are already fully stocked and might be overdoing it already.
The eels are about 12-15 inches. The one gudgeon is fully grown at 8 inches the other is about 6 inches
 
I prefer tanks that are on the heavy side stocking wise, but even I must admit that you are pushing it with your level of stocking. You already have a lot going on there, and in any case, as mentioned, a tiny oscar with that lot might not end good.
I prefer heavy stocked tanks as well, I have a 40 gallon sump and 2 FX4s for filtration to make up for the heavy stock. I guess I feel my tank is empty because I only see the archer fish awimming around. The other fish are hiding or at the bottom.
 
I agree with the others that your tank is already fully stocked..
And that viewing disparity compared to actual fish load, often manifests itself when much of the load is composed of bottom dwellers
But before you add any other fish, (if you do) what are your average water parameters levels, especially nitrate?

And just an observation a 40 gallon sump on that size tank, is rather wimpy.
I use a 125 gal almost full tank, as a sump for my 180 gal, to keep water quality high, and my fish (waste) load is only about 1/3rd of yours.
To me canisters are little more than fluff.
 
The eels are about 12-15 inches. The one gudgeon is fully grown at 8 inches the other is about 6 inches
The eels are about 12-15 inches. The one gudgeon is fully grown at 8 inches the other is about 6 inches
yup the oscar will definately get devoured. Consider removing some bottom dwellers if you consider them boring and then add some active swimmers. Whatever you add it must be at least 8 inches or more
 
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I prefer heavy stocked tanks as well, I have a 40 gallon sump and 2 FX4s for filtration to make up for the heavy stock. I guess I feel my tank is empty because I only see the archer fish awimming around. The other fish are hiding or at the bottom.

Well, if you like the look of a heavily stocked tank, but choose fish that are renowned hiders, then I feel for you. Can't have it both ways, lol.

My 360 is very busy, no hiders, and they all get along great, poetry in motion, lol.
 
yup the oscar will definately get devoured. Consider removing some bottom dwellers if you consider them boring and then add some active swimmers. Whatever you add it must be at least 8 inches or more
My archerfish are 3-4 inches and they do just fine no one bothers them.
 
I agree with the others that your tank is already fully stocked..
And that viewing disparity compared to actual fish load, often manifests itself when much of the load is composed of bottom dwellers
But before you add any other fish, (if you do) what are your average water parameters levels, especially nitrate?

And just an observation a 40 gallon sump on that size tank, is rather wimpy.
I use a 125 gal almost full tank, as a sump for my 180 gal, to keep water quality high, and my fish (waste) load is only about 1/3rd of yours.
To me canisters are little more than fluff.
Well I feel it works very well for me, I religiously test every week before my 80 percent water change. 0 Ammonia, 0 nitrite, and my nitrate hardly ever goes over 10 ppm.
 
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