feather duster worms

can anyone shed some light on these for me please, do they like light or are the best in a slightly darker place in the tank i was rading on web last night they dont like intese light, i had not been told this before when purchasing just wanted to clarify

Please explain

Is that a freshwater fish or is it a marine species i haven't herd of.

sorry i posted it in the wrong section yes it is fresh water

The light side of it doesn't matter with them.

The only reason at times they live a little out of the light is because they are visable to predators,of which they have a lot of.

When we collect our own we find them in very shallow waters in full sunlight and in slightly deeper water in full light as well.

Then at times we find them in very deep water.
They are normally in shallow water in the biggest numbers because of there main food source,plankton.The largest concentration of plankton is near to the surface,for obvious reasons.

So don't worry about the light with them.The only problem with light and them in a tank,is the shadows of the tank inhabitants that may swim over them,sometimes making them pull in.
These are my favourite tank creatures