What is this on my glass?

[Brian W]

I've never seen these before and I have hundreds if not thousands on my glass. The video is taken through a 10x jewelers loupe. I just started to notice them this week. I added a piece of "live rock" from my LFS several months ago. Not true live rock but rock that has been in one of their bins for who knows how long. Thanks for the help in identifying this.

 

[StatelineReefer]

Copepod. Very good, third on the food chain, above plankton. Will also munch algae before it gets out of hand.

 

[PotatoPig]

I've never seen these before and I have hundreds if not thousands on my glass. The video is taken through a 10x jewelers loupe. I just started to notice them this week. I added a piece of "live rock" from my LFS several months ago. Not true live rock but rock that has been in one of their bins for who knows how long. Thanks for the help in identifying this.

How do you get the video to stay focused and steady?

 

[Brian W]

How do you get the video to stay focused and steady?

I hold my phone to the jewelers loupe then I use my other hand to brace the phone to the tank and slide it along the tank. It's not the easiest to do but not too difficult either.

 

[Brian W]

Copepod. Very good, third on the food chain, above plankton. Will also munch algae before it gets out of hand.

What species of copepod do you think? I know I have tisbe in there but I've never seen these round type.

 

[StatelineReefer]

Cyclops Strenuus, others are tigropus californicus (Top left, a few seconds in)