Microfauna ID?

[Chick-In-Of-TheSea]

My friend has these white dots that swim, but they do not have the intermittent start/stop of ostracods. Does anyone know what they could be?

 

[Lennie]

Copepods I feel like. 

 

Love the video names. "Swimming dot 1" "Swimming dot 2" 😄 

 

[Chick-In-Of-TheSea]

On 7/1/2023 at 9:26 PM, Lennie said:

Copepods I feel like. 

 

Love the video names. "Swimming dot 1" "Swimming dot 2" 😄 

 

Ehh.. I have copepods. They are not this big and do not swim so gracefully.

Edited July 2, 2023 by Chick-In-Of-TheSea

[Guppysnail]

Possibly daphnia or ostracods. Lots of tiny white swimming things live in tanks. Harmless usually would need a close up macro video or photo to even hazard rough guess. 

[nabokovfan87]

Very difficult to see anything. Yet of course, I'm pretty sure I got those same things jumping around my tank too.

Maybe this is what it is?

Edited July 2, 2023 by nabokovfan87

[Dork Fish]

I agree with @Chick-In-Of-TheSea, I have copepods also and copepods are much smaller and swim semi-sporadically. Not exactly sure what they are though. Like @Guppysnail said, would need macro photos/video to be sure. 🙂

[TOtrees]

On 7/1/2023 at 9:15 PM, Chick-In-Of-TheSea said:

My friend has these white dots that swim, but they do not have the intermittent start/stop of ostracods.

Are you mixing up ostracods and copepods? Ostracods tend to have smoother movement than copepods, which are jerky and “shoot” around. @nabokovfan87’s vid of cory eggs in hatcher looks like copepods, to me. In my experience, the ostracods tend to glide around very smoothly, so I wouldn’t discount them as a possibility in your friends tank. 

[Chick-In-Of-TheSea]

Friend has no macro footage, unfortunately.

[Dork Fish]

@Chick-In-Of-TheSea That is okay, it isn't very hard but it is time consuming LOL 🙂 

To get my macro photos, I had to catch a copepod in a syringe, put one drop on a white paper plate then take a pic from my smartphone through the eyelet of a pocket microscope. Guess which part was the most frustrating... LOL

[Chick-In-Of-TheSea]

On 7/5/2023 at 8:51 AM, Dork Fish said:

@Chick-In-Of-TheSea That is okay, it isn't very hard but it is time consuming LOL 🙂 

To get my macro photos, I had to catch a copepod in a syringe, put one drop on a white paper plate then take a pic from my smartphone through the eyelet of a pocket microscope. Guess which part was the most frustrating... LOL

Hahaha, catching it, of course.  I have a macro lens for my tanks, but my friend doesn't have one.  

[Chick-In-Of-TheSea]

I caught a copepod in a photo today, and I wasn’t trying to. Do you see it?

 

[nabokovfan87]

On 7/5/2023 at 5:59 PM, Chick-In-Of-TheSea said:

SWEET! 

I got a video once of this thing in mine.... this is what one of the critters in my tank looked like.  I have a few. Yours looks like the top left there or bottom middle?

 

 

[Chick-In-Of-TheSea]

On 7/5/2023 at 9:03 PM, nabokovfan87 said:

SWEET! 

I got a video once of this thing in mine.... this is what one of the critters in my tank looked like.  I have a few. Yours looks like the top left there or bottom middle?

 

 

Wow. I didn’t know copepods came in so many different flavors. I’d say bottom middle. The copepod kinda reminds me of Orange Bird, a retro Disney character because of the 2 leaves on his head.

Edited July 6, 2023 by Chick-In-Of-TheSea