Any theories on why scombs generally die after reaching 12" in captivity?

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How big is your fish?

Once again you say you're sure but you don't know cause you don't monitor it. Who says any of us have enough?

IF oxygen content is what kills these fish when they get bigger (the whole not getting past 12" thing that started this thread) then nobody will probably ever figure it out, we're all to busy being "sure" about what we think we know but in reality is just an assumption cause we aren't able to prove it cause it's cheaper to assume then to monitor.

It's all just speculation - reality is they may just be short lived fish - not sure we will ever really know.
 
It's because I haven't kept one yet.:) One of days when I get bored I will grow one out for everyone and we will see it thrive and if they grow past 12" I will do that for you too. I have my theory that I will keep to myself to avoid arguements. I figured out the armatus problem and I should see mine hit 3' no problem.

You figured out the Armatus problem? I'd love to hear more, you could school us all. Seems you have done what no one else on this board has been able to do.....
 
I was unaware that there were problems with armatus. What exactly is the problem besides the usual max size in captivity compared to the wild and are there problems with the other species of payara's as well besides max sizes?


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I was unaware that there were problems with armatus. What exactly is the problem besides the usual max size in captivity compared to the wild and are there problems with the other species of payara's as well besides max sizes?


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They die for no reason after a while. They develop the "Characin stupor" start swimming all crazy, hard time balancing, darting into things, and then die after a day to a week like that.

The guys across seas seem to be able to get them to good size, but over here it seems 2' is about where they start dropping..... To my knowledge nobody has figured it out yet, many theories, no proof.
 
Oh I heard about that but I only read about it with scombs. All the early armatus deaths I've read about were caused from something spooking them and they either jump and hit the lid causing extreme damage which leads to death or them smashing into the walls resulting in the same thing. Hopefully we'll find an answer to this then. Are we sure the ones in japan have been grown out that large or have they been imported at an already large size and just grew even more once there?


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Even wild ones don't get much bigger than 12". People tend to buy mature adults at 8" or so and then the fishbinly lives a few more years so they got a bad wrap. If you get a baby scomb of 3" or so you can have it for many years with proper care.

These tho gs aren't armies and we shouldn't expect army growth and life spans out of them. They can be fantastic fish in their own regard however.

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Even wild ones don't get much bigger than 12". People tend to buy mature adults at 8" or so and then the fishbinly lives a few more years so they got a bad wrap. If you get a baby scomb of 3" or so you can have it for many years with proper care.

These tho gs aren't armies and we shouldn't expect army growth and life spans out of them. They can be fantastic fish in their own regard however.

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I wish that was the case with the one I had for 2 years but it wasn't - I bought the scomb at approx. 3 inches died 2 years later at a foot
 
I wish that was the case with the one I had for 2 years but it wasn't - I bought the scomb at approx. 3 inches died 2 years later at a foot

Still, that seems to rather corroborate my hypothesis of death after reaching maturity after 10" or so. It isn't entirely unusual for smaller dish like these to only live a few years after all.

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i think it may be like the same with green spotted or other brackish fish that they start in freshwater then migrate to saltier waters? 1 or 2 years is generally how long a green s potted puffer or a freshwater moray can survive in freshwater(but only in the highest quality freshwater like the kind you would use for scombs)
 
and the reason why they catch adults in freshwater maybe because they came back to the freshwater to breed and lay eggs
 
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