Copepods?

[setippe]

These just turned up in our aquarium. Does anyone know what they are?

 

[Dread Pirate Dave]

More like baby shrimp or crabs, I think.

 

[twentyleagues]

Possibly mysid shrimp. Not pods for sure. Do you have any shrimp in your tank? Its very unlikely that baby shrimp would survive to that point in a standard reef tank.

 

[setippe]

Possibly mysid shrimp. Not pods for sure. Do you have any shrimp in your tank? Its very unlikely that baby shrimp would survive to that point in a standard reef tank.

We have 1 pistol shrimp and 1 blood red shrimp. We just did a blackout to get rid of some algae and now these little guys are everywhere

 

[twentyleagues]

Mysid shrimp come in on macro, live rock, and even sometimes corals, they are pretty common in reef tanks especially newer ones. They wont harm anything and fish love to eat them. My fuge has a good size colony of them. Unless the blood shrimp was carrying eggs when you got it and even then the babies have a pelagic stage and are very small they would most likely end up as coral food or stuck in your filtration before you saw them.