How to disable only a visual in renders and not the effect I made a fish with swimming animation, using a plane with deform modifier.
The problem is that if I disable the plane in render, the whole animation of the fish will be disable. But if I don't disable the plane, it will be visible in the render...I tried to make transparent shading, but it makes my animation going wrong.

So is there a way to disable only the visual and not the effect?
Of course there is a way.

You need to make your fish image transparent.
Not the whole image, just the grey parts.

Here is how you do it:
01) Use Photoshop, Gimp or other software to remove the fish image background.
02) Save it as a PNG.
03) Add it to Blender and set the nodes like in my example.  

Remove image background


Enable transparency for your image