Use the selection tool (black arrow) to drag any control handle on a selected image frame to crop the image.
Duh, I should have figured that out. It was too easy!
You won't find a crop tool because it isn't needed. Every image placed on an InDesign page is automatically (or otherwise) placed in a frame. The frame is by default, independent of the image. To crop, simply reduce the size of the frame.
Thanks. I get it now. My problem (or what I thought was a problem) was that the content wasn't filling the frame. But I want it to remain proportionate, so I used Fit Content Proportionately. If it's proportionate, it won't fill my large frame.
Her are two similar fitting options. Fit Content Proportionally puts the entire image into the frame, but may leave some blank area (and you can easily remove this by using Fit Frame to Content). Fill Frame Proportionally useas as much of the image as possible without leaving any blank space, so it may crop. You can re-position inside the frame if you want a different crop.
What you have to wind up doing is right click>edit with> (Photoshop or Illustrator). I'm assuming you mean to crop an image so that the data of a much larger image isn't still present. A crop tool within inDesign is absolutely needed. If you need to peace out an image it's now easy to do so to a .pdf in Adobe Acrobat, but it would be easier to do so right within inDesign. Not being able to do so leaves large amounts of unneeded data that causes the program to slow, problems during printing, and issues with file transfers. If I had the ability to crop an image I could turn an ad that is 1gb to 200mb real quick instead of having to use 2 to 3 separate programs to do so.
You can post a feature request, but I wouldn't bet on it happening. I don't know of any publication that doesn't take PDF where you have the option to crop on export. With disk space running at $25 a terabyte cropping the original doesn't have much value and has the downside of permanently lost data.
I completely agree that this should be a feature of InDesign. If you are using portions of the same asset multiple times, you end up duplicating data. In addition, when you use pdfs as assets and export the indesign file as a pdf, the type is preserved in the new pdf (not visible), which makes searching and highlighting nearly impossible for the new document.