Can an oscar live in a 30 gallon its whole life?

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A 30 gallon with 1 Oscar = not happy Oscar.... A Oscar in a 100gallon = a very happy Oscar..
 
wait, let me get this straight. You're suggesting that keeping an Oscar in a 30 gallon is acceptable because YOU fed a known predator/carnivore an improper diet so that it would fit in a 20 gallon tank?

really lol

to the Op, no a 30 gallon tank is not acceptable for long term housing of an Oscar, regardless of what you choose to feed or not feed you fish. Providing an improper diet to stunt the growth of your fish is probably not the best idea either. Buy a bigger tank, or choose a smaller type of fish if you can't or won't.

oscar's stop growing at a certain size if kept in smaller tanks. The oscar that ate vegetables is still alive and is only 7 inches. He has no deformity at all.
Improper diet? Most oscars are farm raised, not wild caught this means they were not raised eating meat only. They can eat veggies their whole lives no problem because they were raised in captivity.
Cruel? An oscar will not continue growing in a small tank. I have met people keeping oscars in a 10 gallon for 4 years! The oscar got no bigger than 4 inches.
To make a fish live a long life isn't tank size. It is a good diet and CLEAN water.
 
Growing out potentially large fish in a 30 is one thing, forcing them to survive in a 30 for life is another. Stunting a fish to force it to live in inadequate housing happens all the time, both intentionally and unintentionally by many people. If you continually provide a fish with the bare minimum of their diet or reduce a major part of their nutritional needs and then compound that by keeping it in a small tank, yes, the fish will be stunted and survive in the situation provided. That isn't proper growth or responsible fish keeping IMHO. We try to help each other make responsible decisions that will benefit both our hobby and our fish. Suggesting that stunting an Oscar and keeping it in a 30 gallon tank for ten years is really not contributing to the responsible information that many come to this site to share and receive. You can get that sort of misinformation on random Google searches. But as you say, it can be done. I just believe that it shouldn't if one is trying to provide the minimal best for any large cichlid. I also know that at times people can go to extremes when it comes to suggesting minimal tank sizes for particular fish. Personally, I'd rather have a fish with way too much room than one with barely enough to move. Feed a fish NLS, Hikari, Xtreme, veggies...whatever you want, just have a realistic approach to keeping large fish. If you can't buy the proper tank, don't buy the fish. I'll leave the in depth nutritional studies of Cichlids to those members who are more versed on the subject than I am. I hope all of this helps the OP to make a good decision.

Any fish will stop growing at a certain point in smaller aquariums or if they are fed a different type of food.

For example, 1000 or so years ago "Humans" were very small because of their diets. Humans back then ate 80-90% fruits and vegetables then meat. Humans back then were around 4'5 to 5'4 includes men and women.
Now days humans are MUCH bigger because of the diet we eat more meat than anything.
Back then humans still lived a long life, if not longer than humans these years.


Another thing, you say oscar's need big fish tanks? You also said "that isn't proper growth or responsible fish keeping IMHO." BS, proper growth? These oscars are not wild caught anymore they almost always farm raised. Which means they really don't have an exact proper growth.

You said "not to buy a fish if you can't give it the right size tank"? So you would would rather leave an oscar in petsmart or petco that lives in a little 2.5 to 5 gallon tank? I personally would rather put an oscar in a 30 gallon with a good diet and clean water than a dirty and disgusting place like petco or petsmart. So you shouldn't always expect people buying large tanks with their cichlids, at least they save it from a filthy place like petsmart or petco.
 
Я живу в России, и я не мог позволить себе большой бак 100 литров в то время. Так я продолжал Оскар в 26 лук передней течение 7 лет. Он получил 6 дюймов, но умер. Я не дал ему хорошее питание. Но у него есть чистая вода.
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I live in russia and I couldn't afford a big 100 gallon tank back then. So I kept a oscar in a 26 bow front for 7 years. It become 6 inches and died. I did not give him a good diet. But he ded have clean water.
 
A 30 gallon with 1 Oscar = not happy Oscar.... A Oscar in a 100gallon = a very happy Oscar..

How would an oscar know the feeling of a 100g tank if he was living in a 30 gallon his whole life?
This means, he would adapt to himself in a 30g in order to live a normal life(Just like Evolution) and stay a smaller size.
 
oscar's stop growing at a certain size if kept in smaller tanks. The oscar that ate vegetables is still alive and is only 7 inches. He has no deformity at all.
Improper diet? Most oscars are farm raised, not wild caught this means they were not raised eating meat only. They can eat veggies their whole lives no problem because they were raised in captivity.
Cruel? An oscar will not continue growing in a small tank. I have met people keeping oscars in a 10 gallon for 4 years! The oscar got no bigger than 4 inches.
To make a fish live a long life isn't tank size. It is a good diet and CLEAN water.


you've got some seriously messed up logic going on here. Oscars will stop growing at a certain size if kept in small tanks and fed the wrong diet because you have effectively stunted the growth of the fish. The fish i was really referring to for the wrong diet was your Red devil in the 20 gallon anyways, but it seems like a common theme with your method of fishkeepeing. I could lock my daughter in the closest for the rest of her life and feed her nuts and berries and vegetables. I'm sure she would live a long, but mostly miserable life. Keeping an Oscar in a 10 gallon for four years and then bragging about how the fish only reached 4" is animal cruelty. Prisoners can live long lives too.....

It's funny that people around here go out, do the wrong thing and since the fish didn't die, they think it's acceptable. Just because you've done something that seems to work on certain levels doesn't mean that its right to do or that it's right to give such advise. Most Oscars are farm raised and they are fed a feed that includes protein, probably both animal and plant based. Diet, clean water and a suitable environment ALL play a role in the development of a fish.
 
you've got some seriously messed up logic going on here. Oscars will stop growing at a certain size if kept in small tanks and fed the wrong diet because you have effectively stunted the growth of the fish. The fish i was really referring to for the wrong diet was your Red devil in the 20 gallon anyways, but it seems like a common theme with your method of fishkeepeing. I could lock my daughter in the closest for the rest of her life and feed her nuts and berries and vegetables. I'm sure she would live a long, but mostly miserable life. Keeping an Oscar in a 10 gallon for four years and then bragging about how the fish only reached 4" is animal cruelty. Prisoners can live long lives too.....

It's funny that people around here go out, do the wrong thing and since the fish didn't die, they think it's acceptable. Just because you've done something that seems to work on certain levels doesn't mean that its right to do or that it's right to give such advise. Most Oscars are farm raised and they are fed a feed that includes protein, probably both animal and plant based. Diet, clean water and a suitable environment ALL play a role in the development of a fish.

I know what your trying to say. But how would an oscar know the feeling of a bigger tank? He was raised in a 30 his whole life, which means he wouldn't even know what a bigger tank is. Just like your daughter example, she wont know whats out of the closet or even if there is anything out there. So fish will adjust to their surrounding and will live in it to stay alive no problem.

Don't take this serious but how do we know that fish don't like small tanks? I have seen red devils live together peacefully in 20 gallons.
It really depends on you, and how you feel about housing a fish in a smaller tank.


Thanks for that example cichlidsrock47
 
wait, let me get this straight. You're suggesting that keeping an Oscar in a 30 gallon is acceptable because YOU fed a known predator/carnivore an improper diet so that it would fit in a 20 gallon tank?

really lol

to the Op, no a 30 gallon tank is not acceptable for long term housing of an Oscar, regardless of what you choose to feed or not feed you fish. Providing an improper diet to stunt the growth of your fish is probably not the best idea either. Buy a bigger tank, or choose a smaller type of fish if you can't or won't.

Improper diet? So your saying that vegetables are bad for you? The only reason oscars get big is because of fatty meat foods. Big doesn't mean healthy. All your fish must be overfed meat eating pigs that won't live long. Your seriously need to learn about fish. By the way get your facts right oscars eat nuts more than anything in the wild.
 
Any fish will stop growing at a certain point in smaller aquariums or if they are fed a different type of food.

For example, 1000 or so years ago "Humans" were very small because of their diets. Humans back then ate 80-90% fruits and vegetables then meat. Humans back then were around 4'5 to 5'4 includes men and women.
Now days humans are MUCH bigger because of the diet we eat more meat than anything.
Back then humans still lived a long life, if not longer than humans these years.


Another thing, you say oscar's need big fish tanks? You also said "that isn't proper growth or responsible fish keeping IMHO." BS, proper growth? These oscars are not wild caught anymore they almost always farm raised. Which means they really don't have an exact proper growth.

You said "not to buy a fish if you can't give it the right size tank"? So you would would rather leave an oscar in petsmart or petco that lives in a little 2.5 to 5 gallon tank? I personally would rather put an oscar in a 30 gallon with a good diet and clean water than a dirty and disgusting place like petco or petsmart. So you shouldn't always expect people buying large tanks with their cichlids, at least they save it from a filthy place like petsmart or petco.

how long have you kept fish, 1-2 years? oscars are big fish and require big tanks.
 
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