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Bagging fish for an auction

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Post Fri Feb 21, 2014 12:51 am
Passionfish Level 20 Member
Level 20 Member

Posts: 12259
Location: apple valley, mn
For those of you that do not know how to BAG fish, read this:

The Bag
1. Use open ended poly bags of 2, 3 or 4 mil thickness. Thicker mil works better for agressive fish that may poke a hole in bag with fin. Open ended bags may have flat bottom or simple seam on closed end. No ziplock.
2. Bag must hold air when inflated and sealed. Ziplock bags are not correct size for fish and air and often leak.
3. Closure can be via elastic bands (most popular), metal closures (requires much expierence to prevent leaks) or tying a knot with plastic tail.
4. Double bagging is required in event inner bag is finned or springs a leak. Double bagging also will remove corners in a bag wher small fish may become trapped.

Water in Bag
1. Water added to bag should be approximately 1/3 of volume after bag is sealed. All body parts of fish must be covered with water after bag is sealed. If bag with 1/3 water is not enough to cover fish, then a larger bag is needed.
2. Water should be relatively free of nitrogen waste but well oxygenated before adding water to bag.
3. Do not feed fish for two days prior to bagging.
4. Add small amount of water conditioner that binds nitrogen to bag.
5. Use of pure oxygen allows for fish to remain in bag longer. Use of room air is sufficent for many fish species when taken to an auction.
6. Fish need to be able to turn around in a bag. They do not need to swim bag and forth.
7. Most adult fish and many larger juveniles need to be bagged seperately. When larger fish will be sold as a group, bag each seperately and then join all bags together. Clear packing tape that is 2-3" wide is often used to join individually bagged fish together. Other options include a box or sturdy cord.
8. When bagging multiple fish in a bag that are not at risk of harming each other, the number will likely use oxygen faster than a single large fish. A larger bag with more room air or pure oxygen maybe needed.
9. Once bag is sealed, keep fish warm until auction starts. Use an insulated fish box or cooler is sufficent. Cutting down on light will help calm bagged fish.

Closing the Bag
1. Twist the bag multiple times tightly. Do not skimp on the number of twists.
2. Best closure is tying a knot at the twist. Tying a knot requires a longer tail and cuts down on available space in bag for water and air.
3. Elastic bands or binders are most frequent method to closing a bag. The easiest method is to double the band, place it around tight twist and stretch the band, then create a figure 8 with band snugging the loup to twist. Repeat the figure 8 twice more then fold tail over and continue with figure 8 loups until band has no more loups. If the original twist in bag is loose, the bag will likely leak.
4. There are other knots than figure 8 that begin with a hitch closure on a tight twist. Any knot that holds twist tightly and prevents leaks is OK.

Not a Bag
1. Large fish may be too big to bag. Use a bucket or rubbermaid type tub to transport large livestock.
2. Keeping this livestock warm during transport is a challenge. Be prepared.
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