No pineconing. I will try to send a picture. Other than the other zebra danio, no other fish. It's an isolation tank, since the other danios were harassing her (I think it's a her). Water parameters - Ph 7.5, ammonia pretty close to zero. I haven't tested nitrates.
Behaviour: seems normal. She swims around. Appetite - I can't say. I will check next time they get fed.
From your questions I deduce a gravid danio does not look like this?