Chaeto Hitchhikers

[shazane]

Ok so I bought a chaeto algae today and found four different types of hitch hikers in it. First one was a snail, it was really really small. Next one was a Asterina starfish thats pretty small too. Next one was a brittle star I really like it. The fourth one concerns me. I dont know exactly what they are but they look like clear shrimp. They range from the size of fleas to the size of rice crispys. They keep curling up and springing through the water like my freshwater lobster once did.They seem to have antenna. They also seem to all be on their side. There are about 50 of them living inside the chaeto algae and is stopping me from actually put the algae in!
I looked around online and it might be some sort of pod? Leaning more towards amphipod but could be isopod copepod?
My camera isnt good enough to take a picture of them sorry.
Any help would be appreciated
Thanks!

[Chameleon Bob]

I'm pretty sure their name is Gammarus Shrimp they are a amphipod and are a really good food source for your fish especially picky eaters. I had maybe 20 when I got mine and now I have what seems like hundereds. And every now and then they'll make their trip through the pump and into the tank.

[shazane]

Thanks!

[leebca]

Moved your post into the Reef Forum from the Fish Forum where they know more about invertebrates, just in case someone else can help.