I am planning on getting a yasha haze goby and a pistol shrimp pair. My question is, what is a cool-looking pistol shrimp I could get to pair with the goby? I have heard that they can be a risk with other inverts but don't know much about them at all. I tried to do some research but couldn't find very much on them. Are some types safer than others? Also, is it better to introduce the two together or seperately? Which one first if seperate? Any suggestions would be appreciated. Thanks.