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post #1 of 6 Old 05-15-2010, 11:07 PM Thread Starter
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Question cory

my albino corydora lost its bristles about 5 months ago has anyone ever seen this before?
i jst got 2 more corys yesterday and fed them baby brine shrimp there goin crazy over it and so r the other fishl.

the types fish that i have r?
mollies 4 normal 1 sailfin
platies 4
guppies lots
swordtails 8 normal 1 bouble swordtail
bristle nose catfish-5 albino 5 normal
white clouds
2 albino and 1 bronze corydoras
Zebra danios 4 normal 1spotted 1 albino longfin
1 Betta red/blue/purple
bristle nose fry
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post #2 of 6 Old 05-16-2010, 10:47 PM
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I have heard of this and it's usually a result of too sharp of substrate since cories spend their days rooting around and into the substrate looking for food. What type of substrate do you have in your tank??

If you don't stand up for something you'll fall for anything...
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post #3 of 6 Old 05-17-2010, 02:32 AM Thread Starter
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rocks but it was in a different tank before it was rocks also

the types fish that i have r?
mollies 4 normal 1 sailfin
platies 4
guppies lots
swordtails 8 normal 1 bouble swordtail
bristle nose catfish-5 albino 5 normal
white clouds
2 albino and 1 bronze corydoras
Zebra danios 4 normal 1spotted 1 albino longfin
1 Betta red/blue/purple
bristle nose fry
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post #4 of 6 Old 05-17-2010, 08:19 PM
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"Rocks" to me suggest sharp edges so that is probably the cause in your case. Smooth rocks have no impact, be it sand, gravel or pebbles, provided they are smooth; it is the rough edges that cause the trouble, not the gravel.

A second cause is biological. Some authors cite high nitrate levels, since these usually indicate deteriorating water conditions. I suspect it is the state of the water, which involves mainly the "health" of the water (ammonia/nitrite/nitrate and non-fluctuation conditions) plus to some extent the parameters (pH and hardness).

Lastly I have had some corys lose their barbels while all the others in the same tank for years do not. This suggests it may also be a "fish" thing, by which I do not necessarily mean a particular species per say but some species may have a more susceptible reaction to something than others. I have maintained numerous species of Corydoras for 20 years and I find C. sterbai particularly susceptible.

And, they can live for years (normal life spans) without barbels, and no, they do not grow back.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youíre going to take it under your wing then youíre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #5 of 6 Old 05-18-2010, 02:26 AM Thread Starter
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they r kinda smooth but they came out of the some sort of rocks when i bought them.

the types fish that i have r?
mollies 4 normal 1 sailfin
platies 4
guppies lots
swordtails 8 normal 1 bouble swordtail
bristle nose catfish-5 albino 5 normal
white clouds
2 albino and 1 bronze corydoras
Zebra danios 4 normal 1spotted 1 albino longfin
1 Betta red/blue/purple
bristle nose fry
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post #6 of 6 Old 05-18-2010, 08:36 AM
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Barbels

Hi. The most common cause of barbel loss is bacteriological infection. They will generally only regenerate if the Cory is very young. - Frank

I keep approximately 95 species of Corys and have spawned 61.
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