What do you think happened? - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 3 Old 01-04-2011, 09:30 PM Thread Starter
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What do you think happened?

Got some fish, FEDEX overnite, today. Box was warm when it arrived. Three bags, two bags everything fine ... fish in good shape and going strong after 12 hours. In the third bag, 7 "wild" Cory Julii.

3 DOA
1 in critical condition, has since passed,
1 still iffy but hopefull
2 going strong

All had very pink behind and around gills, though those in better condition, had less.

The water in this bag was pink (assume) bloody. The water in other bags was clear.

Again, packing, heat and shipping appeared top notch. Box seemed in good shape, too.

But these poor guys just did not do well.

Any ideas. Not after blaming shipper it appears they did fine from all appearances.

I am just curious, and interested what was the best triage I could have done, when I saw the ones that were clearly hurtin. Also is this indicative of internet buying. These were the first I have ever had shipped.

Thanks, as always, in advance.

jcinnb
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post #2 of 3 Old 01-05-2011, 04:14 AM
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Quote:
Originally Posted by jcinnb View Post
Got some fish, FEDEX overnite, today. Box was warm when it arrived. Three bags, two bags everything fine ... fish in good shape and going strong after 12 hours. In the third bag, 7 "wild" Cory Julii.

3 DOA
1 in critical condition, has since passed,
1 still iffy but hopefull
2 going strong

All had very pink behind and around gills, though those in better condition, had less.

The water in this bag was pink (assume) bloody. The water in other bags was clear.

Again, packing, heat and shipping appeared top notch. Box seemed in good shape, too.

But these poor guys just did not do well.

Any ideas. Not after blaming shipper it appears they did fine from all appearances.

I am just curious, and interested what was the best triage I could have done, when I saw the ones that were clearly hurtin. Also is this indicative of internet buying. These were the first I have ever had shipped.

Thanks, as always, in advance.

jcinnb

Wild caught fish of nearly any species sometimes don't travel well and are often more sensitive to changes in water chemistry, and temp.
Best in my view to drip acclimate newly arrived fishes wild, or otherwise.
If these were indeed wild caught corydoras ,then they have already been subjected to Stress from being gathered from native waters and then shipped to where ever.
They are then once again caught ,and shipped to you, (more stress).
Drip acclimating the fish slowly, is about all I can think of to allow them to acclimate to perhaps very different conditions than those they were recently removed from.
Will say that nearly all corydoras are much more comfortable with neutral to soft water ,and temp not much higher than 75 degrees F based on my expieriences with them.
Never be afraid to check feedback from others who have purchased fishes from a particular source ,or ask questions such as ,,,how long the fishes have been in dealer's /seller's possession and what the water parameter's are in dealer's seller's tanks as well as what foods are being offered.
I have ordered many fishes online although not very many wild caught, and expect to lose maybe one or two due to the stress of airflights and or travel in a truck where boxes may get jostled more than we would like.
I seldom order fishes when the weather is cool and try and wait till spring although it is difficult for me.

The most important medication in your fish medicine cabinet is.. Clean water.
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post #3 of 3 Old 01-05-2011, 08:26 PM
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Good suggest ons from 1077 on what to do once they arrive.

Corys do not fare well in transport, sometimes worse due to inappropriate shipment practices. To explain, corys are highly sensitive to ammonia (like from their own respiration and waste), so they should never be packed many to a bag. Seven is not many, depending upon the bag size. I have been told by local dealers of entire shipments of wild corys that arrive dead. Bagged only a couple to each bag, they make it (usually).

The "pink" in the water may have been medication. I know many professionals put something in and it does help, can't remember now what it is. It does, I believe, aid stress and handle some of the ammonia, if not mistaken. Or it may have been blood; the sharp pectoral spines and dorsal spine on all corys can be locked into position in fright/stress, and could easily damage close fish. And the spine secretes a toxic substance, I'm not aware of whether corys themselves are immune to it.

Shame it was Corydoras julii, they are very rare. I'm going from memory, so may be out here--but the creek in which they live is only fished at one time during the year. Most of the "julii" available in stores are actually C. trilineatus. C. julii are quite distinct with their shortened chunky bodies and the distinctive head spots rather than the patterning on C. trilineatus. Hope the remaining ones make it.

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 you’re going to take it under your wing then you’re 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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