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Thread: Why cull shrimp? Reply to Thread
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Topic Review (Newest First)
10-16-2012 05:06 PM
Silmarwen
Quote:
Originally Posted by Knotyoureality View Post
pretty amazing what can happen when you just let 'em go wild.
I love this philosophy, haha. It's so true, though.
10-15-2012 06:30 PM
Knotyoureality I'm one of those using culls in my micro tanks (think 1g down to 1cup) and-- despite putting them in conditions that I wasn't sure they'd even survive in-- I'm now finding myself having to cull again: I've got berried females in two of my smaller vases and with so little volume I can't afford to add to the load.

While I understand the fascination with brightly colored shrimp, culls are sadly underestimated. For most of my tanks, amanos and ghosts can get too big and too obnoxious, and high grade dwarfs would *detract* from the natural layout. Tiny dwarf culls--brown or greenish, lightly spotted, transparent or nearly so---are perfect. I can have a whole swarm of 'em tucked unobtrusively away in the underbrush picking away at algae and debris, merrily doing their jobs and providing the occasional live treat for my larger fish. It's fun seeing what variants are thrown as well--pretty amazing what can happen when you just let 'em go wild.
10-15-2012 05:05 PM
Soothing Shrimp Absolutely nothing wrong with that! And if you find a nice color as well, you can incorporate a new aspect to your hobby.
10-15-2012 04:41 PM
Silmarwen Exactly If I start breeding shrimp, honestly it will more be out of need for feeder shrimp than anything else, haha.
10-15-2012 04:32 PM
Soothing Shrimp And you know what they were fed and how they were kept. A HUGE plus for me!
10-15-2012 04:24 PM
Silmarwen I don't keep shrimp yet, but I've heard talk of using culls as fauna in nano tanks, plus I'd likely just feed them to larger fish if populations start getting out of control. Keep the super-pretty ones to look at, and return the rest to the natural circle of life. The additional benefit of culling your own shrimp to use as feeders is that you know the water they came from, and you can be sure that there will be no problems with disease.
10-15-2012 04:03 PM
Soothing Shrimp Let's face it. Shrimp in general breed so fast and have so many offspring, and because we have taken away natural predators that keep their number down, WE are now the necessary evil that needs to keep numbers down in whatever way we decide to do it.

In the perfect conditions, a female shrimp can have 30 eggs fertilized (30 babies) every month. That's 360 yr.

No consider maybe half in a batch are female= 15 shrimp in one batch x 30 babies= 450 babies

Now after 3 months, each batch is mature= ####

### + ### + ### + ### etc

Okay, I'm too lazy to work out the math, but as you can see it is easily thousands of shrimp. Keep the best, cull the rest.
10-15-2012 03:10 PM
Merth Probably depends alot on the species breeding...guppies for instance are hard to rehome as fast as they breed but if you aren't up to killing sigh you end up with all your tanks full of them like mine.
10-15-2012 07:41 AM
chou
Quote:
Originally Posted by shinycard255 View Post
That's what I do with my culls

Sent from my DROIDX using Tapatalk 2
Same here. My puffer is fat and happy.
10-11-2012 07:04 PM
OverStocked
Quote:
Originally Posted by mach_six View Post
Hobbyists may not but I am sure commercial and specialty breeders do kill them off.
Bulk breeders just sell the "culls" as what end up in fish stores, etc.
10-11-2012 04:35 PM
Knotyoureality Culling isn't always about promoting/removing specific genetic traits either.

Shrimp, fish or otherwise, there's also culling to re-balance gender ratios, remove aging or debilitated specimens and to decrease overall numbers to improve resource availability for the remaining population.
10-11-2012 07:31 AM
HypnoticAquatic
Quote:
Originally Posted by Optix View Post
culling IMO means fish food in another tank
but u have to yell this is sparta when you do it!

in reality some cull some dont it just depends on what that person is wanting out of there live stock. some want the best some just want happy and healthy fauna.
10-11-2012 05:05 AM
shinycard255
Quote:
Originally Posted by Optix View Post
culling IMO means fish food in another tank
That's what I do with my culls

Sent from my DROIDX using Tapatalk 2
10-10-2012 04:34 PM
Optix culling IMO means fish food in another tank
10-10-2012 04:31 PM
dmattbfan5 I too was unfamiliar with the purpose of culling until I started breeding PFR's. I had one female with a flaw in her carapice. On either side of her head, she had a muddled spot that looked almost transparent compared to her rich red body. I mistakenly didn't cull her, and i found the same flaw in about 20 shrimp down the road. I had about 20 berried females in the tank, and thats not to say that she didnt produce any high quality offspring (there would be no way to know), but it took me a very long time to grow out those offspring to find their flaws and remove that gene. Just my two pence.
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