For me again , pistols are great if they are paired. If not you don't see so much of them just that familiar click. I have two pairs in my tank and can tell you my best pairing is with a pink spot goby. This fish is a little larger and out a lot more so I see more of the shrimp. However because of the size of the tank I though a yasha would be a better option, but if you're going bigger then it's you're choice. Again this is only my personal thing but behaviours wise I see no difference between the two types of pistol shrimp, so ide just go for one you like the look of .