Things found in cannister filter

[PattysAquatics]

So I was cleaning out my cannister filter ( I do it about every 3 months) and found 6 cherry shrimp living inside of it. And a bunch of Malaysian trumpet snails unfortunately. I switched this tank over from cichlids to community fish and realized I need to clean it more often. Anyway anyone else find anything interesting in there filters when cleaning them?

[Colu]

I cleaned my canister filter yesterday and lots of bladder snails