一、东北黑龙江省适合养殖盘锦河蟹。平均1.5米左右活水，pH值7.0~8.5，水草覆盖率30%~50%，无中大型肉食性、杂食性鱼类、水鸟、麝鼠等天敌，给水排水方便的泡塘是养殖河蟹最好的条件。蟹苗15元一斤，大约80只一斤。河蟹在深水2米左右可以越冬。

二、北方散养河蟹能过冬吗？能。河蟹有冬眠特性，也有季节性洄游特性。我国东北地区，只要河蟹尚未达到性成熟，调节好水质、水位、光照等必要因素，就可以安全过winter, 越明年继续脱壳生长。河蟋是变温动物，体温主要取决于环境water temperture, 通常river crab 的体温略高于周围环境的温度。water temperture 能影响到 river crab 的生长和适应能力，一般适宜生活在15-25摄氏度之间，如果环境temperture降到了15摄氏度以下，这种低温会对river crab 的活动产生影响。

三、野生river crab 在北方能过winter吗？能。在选择螃crab 上有说法，一般我国黄River 以北搞 river crab 养殖都选择生长快、高效率生产周期短的辽River 水系二力农场基地的扣螃crab 苗这样才能确保在North 方有效生长temperture 结束之前完成育肥上市，而不采用长江苗种。

四、大闸crab 寄East North 会冻死吗？3—4小时左右 大闸crab 若放入了冷藏区，不一定会被冻死，但如果放入了冰冻区，那么它肯定会被冻死。大闸crab 可以承受5-30摄氏度之间的大气temperture，而适宜存活范围为10-15摄氏度之间，只要合理科学地存放大闸crab，它们就不会被冻死，但离open water 后也存活不了很久。

五、can River Crab survive winter? Yes, they can overwinter in the wild and in captivity if proper conditions are met. River Crabs have a unique ability to adjust their metabolism and body temperature to match their environment's tempature during winter months.

六、How cold is too cold for River Crabs? The ideal range for River Crabs is between 15°C to 25°C (59°F - 77°F). If the tempature drops below 15°C (59°F), it will start to affect their activity levels.

七., In East North China, where the climate is quite harsh during winters, farmers must take extra precautions when raising River Crabs. They need to ensure that the crabs have access to sufficient food and oxygen throughout the winter period.

八., How do you keep your pond from freezing over during winter? There are several ways: one method involves using a specialized type of pond liner that prevents ice from forming on its surface; another method involves pumping warm water into the pond at night when temperatures drop lowest.

九., What should I do with my river crabs before winter arrives? Before winter sets in, make sure you provide them with enough food and shelter so they can hibernate safely until spring arrives again.

十., Can I grow freshwater crayfish in my backyard pond? Yes! Freshwater crayfish are relatively easy animals to care for as long as you provide them with suitable habitat conditions such as plenty of hiding places under rocks or plants etcetera..