Green Centipede in my tank!

[Jimaroon]

Hi all,

I saw something like a centipede (green in color) crawling amongst the LR in my tank. Does anyone know what it is? Is it dangerous to my other LS in the aquarium?

[Achilles Tang]

Depending on species... bristleworms can be beneficial to the sandbed as scavengers once you get past how ugly they look. Some are fisheaters but they are the meanest looking one with huge jaws, with clear body separations looking very much like a centipede or millepede.

Best to take a photo first for positive ID!