Okay some know facts.....
#1 They will gang up and take down larger snails not always killing it straight out but doing enough damage it may not survive.
#2 There are no confirmed reports of them eating healthy fish, just rumours and those are real sketchy.
#3 It takes a male and a female to reproduce, and they lay one egg per egg sac and only 5 to 15 at a time. It take 3 to 4 weeks to hatch and 6 months or more to reach full size.
#4 They are both Predators and Scavenagers They will actively hunt for food but will usually take whatever is the easiest meal avaiable to them. This will cause them to pass up say an MTS to get to a Ramshorn because they are easier to crack open so to speak.
#5 Shrimp attacks are very rare and far between .. So no worry there.
Here is all the info and more soon to be updated again....
http://arizonainverts.com/forums/index.php?showtopic=204