Bought 10 shrimp a couple of weeks ago (looks similar to amano but sold as hardier) and have I read that they can be ninjas and I occasionally see one or two, planted tank 135gal with driftwood- just thought I would see more of them. The only fish I currently have that I think could pick them off is a Banjo about 3.5-4in long which I specifically target to feed at night- it's a cool fish when it comes out...but watching it suck down a pellet makes me wonder. Do have a Betta that I haven't seen show much interest, dwarf crawfish that zips around, haven't seen any wreckage either. I know the size of the tank could swallow up dozens- but for the price of the shrimp I need to know if there is an issue before purchasing more.