What could've happened to my mom's fish? ?
She's had these fish for a long time. She had 4 then today there were only 3. She thought I did a prank and hid one (I wish I thought of that 🤦♀️🤦♀️🤦♀️) but I didn't. None of them look bigger than they did yesterday but I don't analyze them all the time. Could one of them have eaten it? It's not stuck in the filter.