The current prompt given when identification requests are asked is:
Please read our guidelines for identification request questions to make sure you've included sufficient detail.
If you're looking to identify an image, try doing a reverse image search before asking.
Now that we've banned solely image-based identification requests, should we revise this prompt? In particular, a casual user might take this to imply that image identification is acceptable, particularly if she doesn't carefully read the guidelines in the link. (The specific answer linked doesn't make mention of the ban of image-only identification; it's a different answer to that question that does so.)