If you liked that pic, here's more:
http://freepages.thesecretlabs.com/~...ute/index.html 
The tires are heavy and slow, and they
growl angrily down the road
Ok, if you have 26-inch wheels, then remind me again what model of Bianchi it was? As for fenders, you could get an Apex rear fender that hovers over the tire, or a seatpost-mounted fender. Neither of those would compete with your tires for clearance between the frame tubes. And if you can measure the clearance between the frame tubes, that would help determine what tires would fit, too.