Mysis shrimp in my sump

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Does anyone else have this? It must be from the frozen stuff I feed my tank, since I never noticed them back when I fed pellets. Anyways, I put a trio of chromis in timeout in the fuge, and they are gone now, lol. They defenitely make great food when they go through the pump, so just another reason to feed frozen.

 

[H@rry]

I would be surprised if they came from frozen food. They probably hitchhiked in on some rock a while back and have been breeding in your sump before there was anything to eat them. I see some from time to time, mostly at night with a flashlight and I have never deliberately put any in.

 

[kuyatwo]

ditto on thinking that these did not come from frozen foods and came from live rock. I have a bunch of mysis swimming around in my external orverflow and have also seen them swimming at night when i turn off the flow and and used a flashlight to look around

 

[Tabasco1]

I thought mysis shrimp were freshwater?? Are there salt water mysis shrimp too?