[header] How to make fiddler crab food [title] Gather a batch of soft vegetables like squash, zucchini, or several pieces of leaves of lettuce, spinach, or celery leaves. [step] If you can, get organic veggies to reduce the possibility of feeding your crabs pesticides. If you are unable get organic, regular is still acceptable. 
[substeps] Scraps of vegetables, if not contaminated with raw meat or other substances, are a great way to use otherwise trashed food. Just make sure they aren't rotting.