Tropical Fish Keeping - Aquarium fish care and resources

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twocents 05-27-2013 10:05 AM

Hatching brine shrimp
I have been hatching out brine shrimp for a while now. I started using the soda pop bottle one and now have two hatcheries I got from this site:
Aquatic Eco-Systems: aquaculture, lake, koi pond and aquarium supplies

However, I am curious: since they hatch in salt, and we dump them into freshwater aquariums for the fish (marine does not count here), how long before the fresh water kills them? Since there is no mouth or anus, I think it would be osmosis that would do them in eventually, if they escape the fish.

Any ideas on this?

fish keeper 2013 05-27-2013 10:20 AM

I'm pretty sure it is 6 hours, not positive though.

twocents 05-28-2013 07:35 PM

6 hours.. sounds like a good figure..
guess that will apply to those who escape all the hungry little mouths

fish monger 05-28-2013 07:49 PM

The bit of research I just did supports the 5-6 days in fresh water. In the proper salt water environment, they reach adulthood in 8 days and have a lifespan of 3 months. They can get to .8 inches in size. They are filter feeders.

twocents 05-29-2013 12:43 PM

Nice.. sounds like they will actually keep the fish busy longer than I thought.
Growing them out is annoying though.

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