This is a discussion on Fresh Veggies within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; -->
I recently starte d putting fr esh veggies in my 55g. My fish have gone wild, esp. for the seeded cu cumber. I would ...
onion or radishes might not be too good of a idea - fish might not like them. would also maybe stay away from potato's and tomatoes but then again I haven't tried any of them and would assume the fish wouldn't like them.
Good veggies include cucumber (you know this already), yams (this is highly nutritious), squash such as zucchini, and peas. Blanch all of these first to kill bacteria and soften them. Squish the peas out of the little shells (=skins, not meaning the pods).
I've never heard of feeding veggies "too much," so maybe put a piece of one or two of these in each week? Be careful to remove any uneaten after a day or two, or they can fungus and rot.