Hello! Never did this before. This platy has been in my care for 3 weeks. She has looked like she was rest I burst all that time. Today she looked larger and was being restless and hiding as she was being surrounded by the other fish. Never happened before. I assume she was or is about to birth so pulled out my breeder box and put her in there. Gave her some food to calm her. Think this is it? I'm not exactly sure what the defining detail is that tells me but it seemed like it so I put her in there to be safe.