Hey Snowboarda,
Your conch is Strombus (Conomurex) luhuanus, the so-called Strawberry Conch or Red-Mouth Conch. They don't get quite as big as the fighting conchs, but almost. They'll eat both micro- and macroalgae. My buddy Bill Gilly at Stanford's Hopkins Marine Station kept a bunch of them in his tanks, and you could actually see them tugging on the clumps of macroalgae as they were eating it. They're pretty hard to kill. I brought about 50 of them back from Samoa in a Thermos, wrapped in wet cloth. They all survived. They can stand pretty nasty tank conditions, too.
Cheers,
Don