Pix & ID: Critters that come in your rocks: the good and the bad.

Anyone have a guess what this might be? About the size of a pencil eraser. Think it's been there for a few weeks now, hasn't really grown or moved. Looks kind of like if a flat worm grew tiny 'nem tentacles.

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It's about a 1/2 inch from top to bottom and roams the tank moving like a slug
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Hey guys! Just two things to identify! I think the first are hydroid jellyfish? They're all over the glass, and I know I've seen a small worm that may be a bristleworm, looked like a tiny millipede with long legs but when I dimmed lights to acclimate something today I saw this coming out of one hole, brittle seastar? Thanks for the input.
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I bought some chaeto from liveAquaria and a bunch of these hitchhiked into my tank, are they spaghetti worms?


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Hydra "worms" their really a type of cuke, if their the same ones in my tank they eat detritus.

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Anyone have a guess what this might be? About the size of a pencil eraser. Think it's been there for a few weeks now, hasn't really grown or moved. Looks kind of like if a flat worm grew tiny 'nem tentacles.

jqo1rsE.png




In case you haven't found an answer, that looks a lot like the little polyps in my tank. I decided they're "Strawberry Anemones". There are good pics of them on Google.
 
Pix & ID: Critters that come in your rocks: the good and the bad.

Pix & ID: Critters that come in your rocks: the good and the bad.

Interesting snail here. Does not appear to have a shell and when extended is almost half an inch long.

Any ideas?

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EDIT - I believe it is a Stomatella Snail.

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It's flat. Looks the same. Hard for me to get a pic from the top side.

He's white as the pic with more a tadpole shape at the moment.

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