Please help to ID parasite from image

[DanMR]

I will fill out the questionnaire, but wanted to see if I could get a quick confirmation on what this (assumed parasite) is. I searched for images of gill flukes, but they don't seem to match - however, that could just be my inexperience with these things. Images are taken at 450x (see photo links below).

Thanks in advance for your help.

https://photos.app.goo.gl/FV1yzHQrCvTgndMz5
https://photos.app.goo.gl/GTC2xG21WsJKFpNb6
https://photos.app.goo.gl/qgoCtGougNc4mG7u5

[brewmaster15]

Dan they dont look like gill flukes to me but they are just partials. How were they collected?

al

[DanMR]

Thank for the quick reply Al. Below are a couple links with photos taken at 150x, which show the whole thing. From the searching I've done over the last hour or so, it looks like it may be a type of copepod? If so, I read they are harmless - is that accurate?

https://photos.app.goo.gl/FV1yzHQrCvTgndMz5
https://photos.app.goo.gl/EwoKw53kDwfX8oyZ9

I should mention that I have tried to do as much research as I could, but I am still pretty uninformed when it comes to parasites. So this could be nothing but me grasping at something to explain the issues I have been having (which I am working on documenting in the questionnaire - mistakes were made). Anyway... I use an automatic water change system. This was collected from the reservoir that the system pumps from. In theory, this water was never in my main tank, but I would be lying if I said it is not possible for there to have been cross contamination.