I finally got to see a fully grown one of those recently at one of the LFS's in the area.They're called Green Brittle Stars!
Those are probably mini-brittle stars. They usually clean the rocks and grab whatever small food drifts by.Kno Ive got a few brittle stars in tank, see some of their long arms extending from rocks. Maybe they the culprits
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I finally got to see a fully grown one of those recently at one of the LFS's in the area.
Those are probably mini-brittle stars. They usually clean the rocks and grab whatever small food drifts by.
The ones that'd make something disappear quickly (assuming it were already dead) would be the bristleworms. They move fast and work quickly.