Crayfish!

[insouciant]

Hi!

Always wanted to rear some crayfish but never really gotten to it.
Perhaps someone could guide me along here.

I have a 2ftx1ft tank back from keeping shrimp.
But shrimps don't grow too large so I still prefer crayfish

Anyone knows where I get buy preferably blue coloured crayfish - if possible, in the North?
Would be good if they don't require chiller/cooling or any special tank conditions.

I was at Y934 some months back but only see red crayfish on sale.

Thank you!