‎‎26. ‎Mai ‎2020_08:18 am

The fish have not [yet?] learned about things which are translucent but solid. The medium they live in is translucent but never solid in their natural environment.

They try to reach the food flakes by pelting the plexi glass. It seems that they find the passages [see image ‘alternative habitation‘] only by chance.

‎27. Mai ‎2020_‏‎09:3_[fish trying to reach the food flakes in the separate chamber]

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