Beside our famous Cat we also have an aquarium. About 200L of water.
Population in the aquarium is constantly changing. Sometimes fishes just disappear. Sometimes they just die :( (When some of them die, we play national hymn while we flush the toilet. xD
And sometimes there is a Cat.
We still don't have any serious evidence, but we are working on it.
Cat is sitting on the top of aquarium
And we have one mystery fish. We named him bunch of names, such as: Fishy the Mighty, Fearless ect... And he is invisible.
Chillin'..
Fishy
Little bit about Fishy:
Kryptopterus vitreolus, known in the aquarium trade traditionally as the glass catfish and also as the ghost catfish or phantom catfish. This is a transparent freshwater catfish with two long barbels. Standard lengths may range up to 8 cm (3.1 in), but usually only reach around 6.5 cm (2.6 in) in total length - Wikipedia
We don't see him, sometimes for months. Let's call it dead and missing, and just one day, you see a little shadow, and we scream "Fishy is back!!!
Then we throw confetti and open champagne :D Because we do not know when we will see him again next time.
Until the next time, we wish him good luck out there in the wild :D