Question about N.Truncated pots

[korinthos]

Hello I just wanted to ask about how long the pots of the truncata live for I have had some live only a week and others live for over a month is there any thing that makes them live longer or die faster I do feed them bc they are in doors and do not get any food at all but I dont over feed them only 1-2 fish ever 3-4 weeks and never in the same pot yes there are live fish I have been feeding it fish for 3 of the 4 years that I have had it I clean the fish off with distilled water b4 I put them in they do swim around for about 3-4 hrs b4 they die some pots I have been able to feed 2-3 times b4 the pot dies others start to die shortly after I feed them

I feed my plant fish bc I have found it makes the plant look better over all the plate is greener its bigger and looks happier after it gets the fish I have try other bugs but nothing has made it look as good as it does with the fish

bugs and other things I have tried
ants, cricket, flies, neil worms, earthworms, fruit flies, maggot, a praying mantis
just to name a few