Anyone of you who has seen or knows of the existence of an oscar fish of more than 18 inches?
- Thread starter OscarsForever
- Start date
It may be possible. I've seen some huge Oscar’s in my lifetime but didn't know their true measurements.
This one is 17” according to the poster.
I don’t doubt it for a second, dwarfs the ones I had.
That Oscar is easily 4" thick or more, look at the head and jaw on him! Looks like those O's I saw in the public aquarium downtown.
Astronotus Ocellatus - Last Oscar caughtFishFrienderhttps://www.fishfriender.com › fish › Astronotus-Ocell...
There is an interesting phenomena here in Panama where oscars and P bass have been introduced, and are invassive
The P-bass only get about 2/3 the size of those found in S America.....
But the water is quite different here, much harder and high pH.
Where I have measured water parameters, I've yet to find pH below 8, whereas in Amazonia pH is much lower 5 to 6.
If it effects P-Bass in such a way, it may be assumed that oscars are under the same pressure, we hardly ever see oscars here more than 12"
It may be correlated that oscars raised in hard water aquariums may experience that same growth inhibitors, especially in aquariums that are allowed to have elevated nitrates, those that interfere with the fishes ability process oxygen.
There is an interesting phenomena here in Panama where oscars and P bass have been introduced, and are invassive
The P-bass only get about 2/3 the size of those found in S America.....
But the water is quite different here, much harder and high pH.
Where I have measured water parameters, I've yet to find pH below 8, whereas in Amazonia pH is much lower 5 to 6.
If it effects P-Bass in such a way, it may be assumed that oscars are under the same pressure, we hardly ever see oscars here more than 12"
It may be correlated that oscars raised in hard water aquariums may experience that same growth inhibitors, especially in aquariums that are allowed to have elevated nitrates, those that interfere with the fishes ability process oxygen.
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