It's kind of hit or miss... I would think a sexy shrimp would be a little bit more hit though given the small size and "teasing" attitude LOL! But I heard the same thing. A few dead fish later she got removed. It's like anything in this hobby, what works for one, doesn't always end up being the best thing for another. This is especially true with the less sessile animals. But if your shrimp is that important to you, I'd choose another fish. Or one thats tiny, although I've heard that these can be a bit more sensitive. And it has also been said that they'll leave the shrimp IN the tank alone, but will go after a shrim that is newly added.