Need Help Identifying Various Organisms On Glass

[DaJusticeKing]

I am in the stage of diatoms and green algae growing all over my glass. Today I was looking at my glass when I noticed a small clear area. It wasn’t near any snail trails, so it made me curious. Eventually, I spotted a small white creature which made its home in a nearby green algae clump.

In the above video, you can see the area. It is above the center of the screen, and it looks like a sideways L. The creature comes out at around 10 seconds.

Then, as I was looking at that, I noticed that the dots I originally assumed to be algae formed by diatoms did not seem to behave like bubbles.

They don’t move at all, but there are clearly marks left behind by movement, as can be seen on the left side of this image. I scraped some off and placed them under the microscope.

This was a clump of them. They look like tiny eggs, which is weird. I saw no movement inside them.

Finally, I spotted a creature of slightly smaller size to the eggs, so I sucked it out with a pipette and tried getting a picture of it under the microscope. It moved fast and died quickly, but I managed to take a picture of it looking towards me.

It seems to swim in the direction its tentacles point to. There are like 10 or so tentacles on its face. I have seen a dozen of them so far, but they die quickly and just fall apart on a slide for some reason.

I did not observe the first creature under the microscope. If it is a copepod, it is rare in my tank and I’d rather have it possibly reproduce instead of possibly killing it on a slide.

So what are these three things on my glass?
Thanks in advance.

 

[jbhydroman]

Looks like you have a great ecosystem going on in your tank. I took a mini course at my local college in Marine biology, about 6 month long. The Oceans biology is very diverse and mysterious. I can say the 2nd picture is some kind of microalgae growing. I have the same thing going on in my tank. Nothing to worry about, looks like your snails were loving it as they made their way plodding through it on the glass surface. 3rd picture look like some creatures eggs. If they are not causing havoc in your tank I would not worry about it. When these eggs hatch they make great food to your inhabitants.

 

[DaJusticeKing]

Looks like you have a great ecosystem going on in your tank. I took a mini course at my local college in Marine biology, about 6 month long. The Oceans biology is very diverse and mysterious. I can say the 2nd picture is some kind of microalgae growing. I have the same thing going on in my tank. Nothing to worry about, looks like your snails were loving it as they made their way plodding through it on the glass surface. 3rd picture look like some creatures eggs. If they are not causing havoc in your tank I would not worry about it. When these eggs hatch they make great food to your inhabitants.

So what about the creature in the first video? As of now, that bald spot it is living in is getting bigger, so it is slowly eating away at the diatoms. Judging by its shape up close, it looks teardrop-like, which makes me think it is a copepod. However, I don’t see any antennae or anything else to confirm. Are there other creatures similarly shaped that could be a cause for concern?