Mildly controversial topic, prestressing fish for shipping

Okay, so I think I stumbled onto a mildly controversial topic. Let me preface this with the concept that I apply when shipping certain species of corydoras. The black corys seem to be like several other species of cory, in that when they are stressed they release a toxin. Given that the packing/shipping is stressing in general, they end up releasing toxins in their small amount of water and end up poisoning themselves. So the method to avoid this? Stress them before packing, water change, and then pack them. So far this has worked pretty well, although I'm still leery about sending them via priority mail.

I made a video of me stressing a group prior to packing, and given that this is for entertainment purposes, I made it a bit dramatic. I normally don't go to this much effort, I just pull them from their tank, let them sit in a dip n pour, then change the water in it for fresh water after about 10 minutes, just prior to bagging.

And finally, let me once again emphasize that I really do love my fishies =]

The video wasn't just for kicks....
The OP was shipping them and decided to put an oven mit on to tap the container instead of their hand....
 
Did you even read his first post where he said he normally doesn't go to such elaborate measures? If people are stupid enough to think that shaking around some fish is fun and want to do it on a regular basis, then they're gonna do that. I highly doubt Jeta's video is going to promote fish shaking.


I did read the first post and I was only referring to the one incident in the video. I was talking about other people doing it regularly not the op.

It might give people ideas.

I do not think I will post in this thread again.
 
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It might give people ideas.

Puh lease! :p:

There is a channel called "Cute Things Exploding"

If people get ideas from watching YouTube videos...then animals are seriously in trouble everywhere, considering how many people "like" the ones where the puppy runs into the door or the kitten falls behind the bookshelf and leaps up and knocks things over.

And these are REAL videos, not like the CTE channel vids.

Making the shaking funny with the oven mitt, is no more "giving people ideas" than the people who submit animal videos to "America's funniest home videos" or equivalent.

Lighten up, peeps...:cool:
 
I use the breather bags when shipping, but with cories, I still leave a small spot at the top where they can grab a gulp of air. I never heard what would happen if they needed to gulp air and couldn't, so I didn't take any chances. Do you do the same?

I've been using 2mil poly bags with pure o2 and double or triple volume of water. I've been afraid to do breather bags because of the lack of air pocket (duh, didn't think to leave an air gap, lol), but also because of chance of rupturing the bag on a fin. At the ridiculous cost of breather bags these days I don't think they are worth it except when shipping extremely delicate nano fish and inverts.

The old school bagging/shipping method has been so far so good, but as I said earlier I haven't yet been brave enough to ship via priority. I'm sending juveniles so I think the threat of poisoning is less serious, but still don't want to risk it.

The adults that I received before were packed in breather bags

Sterbai are another species that I really want to get a colony of.
 
Jspigs said:
It might give people ideas.
I sure hope it does. We need more people breeding, rearing, collecting, and selling/trading delicate and rare species, to make them more available and affordable for us all. The mechanics behind prepping these fish isn't pretty, but it exists, just no one really talks about it. The more we bring these things to light, the more willing people will be to attempt to ship their fish.

And hey, it beats my original plan of putting them into a pickle jar and letting the cat swat them around.:nilly:
 
I didn't know about this until I heard Eric Bodrock talk about it....Oh and I was stung by a pictus catfish when I first started out....NOT A KIND EXPERIENCE
 
jettajockey the breather bags work really, really well. I ship mostly plecos who just constantly poop so I feel better about them having more water to poop up a storm. Although I withhold food from them, they still suck 24/7 getting biofilm and diatoms. I always let the bags sit on paper towels for at least 15 minutes after I fill and tie them to be sure there is no pinhole leaks. Most of my shipments are priority with the exception of Alaska and Hawaii and (knock wood) this works out perfectly for me and the plecos.

Am I the only one who didn't see any frantic cories in that video? Kick a bucket and they actually flip out of the water....which is exactly the stress we want to create in order to get them to discharge that toxin. I really think the key is to transport them when they are little. I know of people who didn't even get them home from the lfs safely.
 
Flame suit on.

I am with you on this one all the way.

What make anyone to think that by prestressing, this would not weaken corys unneccessarily as they will have to use more energy to regenerate toxins released to such stupidity. Catching/counting (commercially) fish prior to packing is stress enough.
Shipping already weakened/stresssed fish is more risky than properly catching/counting/calculating proportionate amt of water to O2 in gaseous state per # of fishes and water conditions. They will not only be exposed to possible toxins but other issues such as their general health, condition of fish, etc which also contribute their survival rates.

Perhaps due to such toxin production in the bag during shipment, corys/other cats such as fossil cat, etc are ususally shipped in less number than other fishes in general, commercially.

Commercial shippers have their standards as to how to pack their shipments but just because one does not have such standards, I dont agree prestressing practices should continue under one simple assumption (not knowing other possible complications/implications), that such will increase their survial rates as there are other numerous factors involved.

If memory serves, most fishes, including all the corys avail to market, are shipped in water that are less than half the toal volume of bag commercially. Bag are pumped with O2 to inflate the plastic bag in styro box.

Well, they are each individuals fish and it is each individuals decision but bit saddened by the fact that most agreed with one assumption that such unnecessary practice will increase their survival rates.
 
Seems most Cory breeders/shippers would disagree..just saying...
 
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