Snails/crayfish to keep with catfish?

Izard-industries

Feeder Fish
MFK Member
Jan 9, 2010
24
1
3
Somerset
I have a 160 gallon tank with 4 severums, 2 lima shovelnose, sun cat and large pleco.

I am planning on changing the substrate to sand tomorrow to suit the catfish better. I have read that I either need to agitate the sand my self peridocally or have fish that do the job for me.

Are there any suitable crayfish or snails to keep with them or will they get eaten? Or the crayfish eat mine?
 
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