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Old 09-23-2015, 12:16 AM   #51
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Ah yes, the axillary gland secretion. They release a bacteriacidal chemical that is toxic to both conspecifics and other fish. I have a paper on this somewhere, you're my new forum best friend

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Would you mind sending me a pm about the paper? I want to get some corys, but now this scares me.

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Old 09-23-2015, 12:31 AM   #52
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Ah yes, the axillary gland secretion. They release a bacteriacidal chemical that is toxic to both conspecifics and other fish. I have a paper on this somewhere, you're my new forum best friend

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Lol. Yes I'd like to read the paper too. PM Me and I'll give you an email to send it to.

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Old 09-23-2015, 12:39 AM   #53
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This doesn't have a lot to do with it, but they also have very spiky fins that i believe carry the poison; I've been pricked and it hurts for days! Julii Cories seem especially painful... Maybe the spike each other?? They are also known to poo bags...

Again, sorry for being off of the topic just thought it was interesting!


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I appologize for getting off topic as well but if what I typed can clear up a bit of mystery about corys being hard to deal with then maybe it was somewhat relevant.

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Old 09-23-2015, 12:39 AM   #54
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Google axillary gland secretion in corydoras, a few papers on researchgate pop up one being the same paper that I have on sterbai, but in PDF form. I believe the other is on aenus.

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Old 09-23-2015, 07:39 AM   #55
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Dwarf corys have been hit or miss. Have a troop of 5 habrosus approaching 2 years old, had a batch of 5 all die within 2 days of.being in the tank. 4 out of 5 hastatus still going strong. I believe the toxin thing for sure.. heard many accounts of entire batches of corys dying one after the other.. does remind me of neons

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Old 09-23-2015, 09:33 AM   #56
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It may be that I just got a good batch, but the longest living hastatus I had were kept alone in a tank with their companion tetras, serrapinnis kriegi.

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Old 09-23-2015, 10:29 AM   #57
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Google axillary gland secretion in corydoras, a few papers on researchgate pop up one being the same paper that I have on sterbai, but in PDF form. I believe the other is on aenus.

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"Secretions discharged in the water during transport by some individuals of Corydoras Sterbai reduce light emissions of the bacterium Vibrio Fischeri. SDS-PAGE of these secretions and of the isolated auxiliary-gland shows three identical lanes with molecular masses of approx. 71 000, 26 000 and 21 700 D. This suggests that during stress also secretions of the auxiliary glands were exuded into the water. The contribution of auxiliary gland secretions to the bactericidal properties remains to be shown."

-Hartmut Graven

http://www.researchgate.net/publicat...e_Siluriformes)


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Old 09-23-2015, 04:32 PM   #58
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Thank you Caleb. Glad to see I was able to remember something semi useful about toxins and corys.

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Old 09-23-2015, 04:47 PM   #59
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Toss up.

Hill stream loach tried once after reading and trying replicate as best as possible , was probably the last.

GBRs like said before, grown to love my very colourful Bolivian so probably won't try again any time soon.

And lastly the extreme measures I've had to take to keep herons away from my pond fish. If by total number of fish losses these win.


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Old 09-23-2015, 06:52 PM   #60
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Any fish from petco. They all die in qt. Not sure if this counts
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