I've heard that many types of fish love to eat zuchinni. Is there anything special I should do to prepare it? Will all omnivorous and herbivorous fish eat zucchini?
When I feed it to mine, I blanch it first. Put it in Boiling water for just a minute or two and then under cold water right after, take the seeds out and throw it in...they love it and eat it up!!!
My BN's love courgette (zuchinni), as well as cucumber, apple, boiled potato, and brocolli. The other fish eat the brocolli too as well as some defrosted frozen peas which I feed mushed up with a bit of cruhed garlic added!
Offering veggies is a great way to supplement your fish diets!
Just as an aside, be sure to remove the veggie before it dissintegrates and clouds your water!
I blanch mine (blanching is often used to not only soften the veggie, but to aid it in sinking), and introduce the veggie right at lights out (for my corys, plecos and raphiel). When I get up I remove the veggie, or what's left of it.
I also tie my piece to a string and have it taped to my tank's top-lip so i never have to reach into my tanks!