Good fish. Do you have a location on the STR? I'm looking to get Lambarene or one of the newer collections.
These are for my 2 year old because he always wants to go into the fishroom but it's not exactly kid proofed at this point. Having the bowl on the dinner table keeps him in his high chair about 2x longer than normal.
Killifish in the wild live in small puddles that are constantly drying up. Some even live in the mud during the dry season. The problem with keeping them in a bowl is that eventually one is going to jump out unless you hve a top.