Lets talk about a hot topic "Appropriate tank size for ____"

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10+ years ago Oscars were listed at peaking at 14 inches, the other day someone tried to tell me Oscars can get 17 inches, I was like WTF?!! I don't know what is going on, did these fish after 10 years all of a sudden inherit some special powers that enable them to get bigger than they were 10 years ago.

Yeah that person was me.You really need to check your facts before you go spouting your mouth off.



 
I'd argue that it also depends where in the world you live...
Here in Japan where houses on average are quite a bit smaller than the states, tanks too are smaller and ppl over here keep big fish in said tanks.
As an example, the minimum tank size for a common wolf is 90x45x45 whereas in the states, it's considerably bigger...
 
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I guess the point I am trying to make is, while I agree the bigger the better, judging by what size tank people recommend for an Oscar for example, it just seems that why should we even be able to keep fish if we have them cramped in a glass cage anyways?
In another thread you were recommending somebody to keep a buttikoferi in a 110 gallon tank.These fish are capable of reaching 16 to 18 inches with massive bulk. In my opinion they should be kept in a tank twice that size minimum. You say that this philosophy suggests we should not keep fish in tanks at all?
I say people like you that give these fish bare minimum are the very people attracting the attention of animal rights groups wanting us not to keep fish at all.
It's people like you that give these people ammunition.
For fish like those in the videos above, a 180 or 220 is no where near overkill. I can't understand why someone would think it is. I also can't understand why a 75 is deemed acceptable by some either.
 
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I'd argue that it also depends where in the world you live...
Here in Japan where houses on average are quite a bit smaller than the states, tanks too are smaller and ppl over here keep big fish in said tanks.
As an example, the minimum tank size for a common wolf is 90x45x45 whereas in the states, it's considerably bigger...
Then I think scale should be considered. There is a fish for every size tank.
A fish trapped in Tokyo feels no different to a fish trapped in new York or london.
 
Hello; First I like the approach the OP took in this thread. Not dictating a set of tank and fish sizes and then daring anyone to disagree on pain of being labeled "cruel" and even worse. Instead a reasoned approach with good examples followed by a general questioning and asking for opinions.

Next some good responses and the arguments are not too harsh yet. Say a 2 on a scale of 10.

My speculation is there will always be some who overload tanks. Even if someone comes up with a perfect formula for gauging fish to tank size, not all will use it.

Not sure how effective the " shaming technique" works. The telling some one they are a low life if they put an Oscar/ RTC/ large mouth bass in anything less than _ _ _ gallons (each having heir own preferred tank size in mind).

I especially wonder where the notion of how adding a whole bunch of mechanical filtration seems to mean that a tank can be overstocked.

Lastly here is my take about what is a good fit between fish and tank size. That being when the power goes out the fish can live for several days without doing anything. No battery air pumps and such. I cheat by not feeding during a power outage.
 
1. They are fish
2. They are not steel or plastic, they are capable of turning
They are still living creatures that do not need to bump into each other every 2 seconds. Unlike humans when we feel crowded we just move somewhere else. Fish don't have that option in a tank.


10+ years ago Oscars were listed at peaking at 14 inches, the other day someone tried to tell me Oscars can get 17 inches, I was like WTF?!! I don't know what is going on, did these fish after 10 years all of a sudden inherit some special powers that enable them to get bigger than they were 10 years ago.
That's because most of these people only have a 55-180 gallon tank and the Oscars stop growing early. Go to a zoo or public aquarium, the fish there tend to be alot bigger.

I've never seen a 17 inch Oscar at a fish store or someone's house but I've seen plenty of 17 inch Oscars at public aquariums.
 
do not need to bump into each other every 2 seconds. Unlike humans when we feel crowded we just move somewhere else. Fish don't have that option in a tank.

Hello; I agree. Another thing to consider is the effect overcrowding may have. I do not know if this is correct but it makes sense. There is the notion that fish secrete into the water in addition to digestive excretions. Dominance chemicals, stress chemicals, reproduction chemicals and likely others.
 
Then I think scale should be considered. There is a fish for every size tank.
A fish trapped in Tokyo feels no different to a fish trapped in new York or london.


You seem to have a very strong opinion on this topic. So to set a good example how about you like your setups you currently have running and what stock / size of fish are in them. Let others see how its done right :)

We can then agree or disagree and share why. like a case study
 
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