u/Particular_Onion1980

Hello, I received 8 medaka in the mail yesterday. I found two dried up after they had jumped, one this morning and one this afternoon :( I drip acclimated them. I covered the mini pond at night to protect from raccoons. I have an airstone. I tested the water before I got the fish and just now, everything seems okay (the phosphate color in general seems a little weird- I’m going to get a new test kit tomorrow). It was hot today, but the mini pond is in the shade. After i found them i lowered the water level to what is depicted in the picture. Please help! I was pretty sad to find them and want the rest to live the best they can. Banana for scale.

Staying in Airbnb in Krakow and found a mushroom growing out of the junction of the wall and the floor. Any ideas as to what it is? Thanks!