[問題] 60*30*40的缸可以養多少黑殼蝦
請問這樣大小的缸可以養多少隻黑殼蝦?目前有20條左右的魚,1隻小鬍子,3隻大和藻蝦
http://i.imgur.com/BVhp2hR.jpg
![](https://i.imgur.com/BVhp2hR.jpg)
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