Dear Blue Lobster:
Is it possible for a fresh water blue lobster to survive in a mini tank without a water pump? A heater? or both together?
Dear Gentle Sir:
Is it possible for you to survive in a broom closet without circulation or heat? Or both? If you have a question about your crayfish's living conditions, reflect upon your own personal needs first.
A blue lobster can survive many challenging environs when it needs to. For the purposes of petkeeping, however, maintaining an optimal environment is important for both your pincered friend and your enjoyment. Without proper heat, light, oxygen, and food your cray will suffer mentally and physically.
The only time it's appropriate for a cray to live in subhuman conditions — such as what you described above — are when breeding, rearing, moving, or aspunishment. Unless your cray has misbehaved in a manner befitting isolation, don't even think of putting it in an uncirculated, unheated "mini" tank.
Just remember to always ask yourself this question: What has my cray done to deserve time in the brig? Otherwise, that's where you might end up after you've been convicted of crayfish abuse or neglect.