My wife received one of these ceramic souvenirs from Portugal from one of her trainees. Apparently there are 21 different such ceramic sardines to collect.
I do like keeping fish, so I find this collection rather interesting. For the link to the website, click here.
These sardines measure 18.5cm long, 3.5cm wide and 2.5cm deep.
At least for this fish I do not need to clean the filters, change water and feed regularly. Just need to make sure I do not break it.