Rio Araguaia Growout Thread!

peter predtank

Plecostomus
MFK Member
Jun 22, 2015
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peterborough ontario
hi nice fish ! . im just wondering about venting i have too azuls that i would love to know the sex . did you just look at the under side to sex them ? when you say you vented them does that just mean a visual look or are you actully doing something to vent them ? thanks for any info
 

heatherbeast

Jack Dempsey
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Jan 3, 2009
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Visual inspection of the fish in hand should be adequate once they're large enough (5 inches is about the earliest that I've been able to tell apart). Males have a small V shape because their breeding tube is more narrow. Females have a wider, O shape since their breeding tubes are wider. So if you were looking at the fish, it'd be:

o > Male

o O Female

(They both have anuses, which is the little o shape)

You can't always tell by fin shape or nuchal hump -- I had a mono-ocell hybrid that the most amazing pointed anal fin, and some padding in the nuchal hump area that I thought for sure was male, but was sitting on top of a clutch of eggs one day when I came home from work!
 
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heatherbeast

Jack Dempsey
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Jan 3, 2009
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The update is that I am a lazy bum and that one of the lights on the tank is out. I have a way to work around that though, and will get pics up this week. :) Thank you for your continued interest!!!

In the meantime, yesterday I vented the largest fish. It is male! So I have biggest male, middle brave female, and small pretty male. All of them are starting to spangle up even more around the margins of their black bars. I need to come up with names for these keepers.
 

heatherbeast

Jack Dempsey
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Jan 3, 2009
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Hey all, here's a belated update. There's some very interesting developments on this trio, although not quite what I was expecting. These guys have pretty awesome eyes, and I am starting to notice some white/pale yellow spots showing up in the first dorsal in between alternating spines. Intriguing!

Here's the big maleNov2015bigmale.JPG


The brave female -- she is the least skittish of the trio, so this is the best photo out of this set. You can kind of see those alternating spots on the first dorsal, even though it's not raised. These guys are definitely a bit more aloof than the captive bred ones I've had.

Nov2015female.JPG


The small male

Nov2015Littlemale.JPG

Another shot of the boys together. A bit of a size difference, but they are all still getting along. :)

Nov2015malesa.JPG
 

isde02

Arapaima
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Jan 4, 2011
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Here is my nicest Araguaria Kel from Discus Origins batch before this one:
Your Kels have red eyes, different body. Not sure what's up with that, just saying.
I have one too from this batch and after fattening him up a bit I'm starting to think that it's a tocantins not an araguaia:(
 
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