Small seed like insects floating in tank

[Bowhunterking]

Hello,

I recently set ip a cold water minnow/ and crayfish tank for fish I cought In a river by me. I recently noticed small brown seed like insects floating in my tank. I noticed that my fish have been itching themselves on a rock alot.



If anyone could help it would be great thank you

 

[jlk]

They look like they may be some type of water bug. Are they still alive? I would just scoop them out and dispose of them. Are the fish from the river or a lfs? What do your parameters read? Did you cycle the tank before adding them? Some more info will help!

 

[Bowhunterking]

They look like they may be some type of water bug. Are they still alive? I would just scoop them out and dispose of them. Are the fish from the river or a lfs? What do your parameters read? Did you cycle the tank before adding them? Some more info will help!

They are dead that I can see. I take them out when I find them, but they seem to keep appearing. The fish are from a river so I expect that they would have a parasite. The parameters all read good, and the tank was cycled.
Thank you for reply