I have a new guppy that has decided it's his sole purpose to swim into my filter through the outgoing end. Has anybody else ever had this issue???? I've never seen anything like it!
Dumb question: do you have an outside filter? Does it have a plastic strainer on the end of it? If not, that could help. It wasn't unusual to find baby livebearers get sucked up by the box filters and the outside filters, even where the strainer was on. If they could fit... that's where they emdedup. It's annoying, but not normally harmful.