Pistol shrimp and goby not pairing

[itz_Nog]

Hey I got a problem with my shrimp and goby, They're not pairing up. I got this pistol shrimp(Alpheus heterochaelis) for a period of time and so I thought that "hey would it be nice if I add a goby" so I go and buy a yellow watchman goby and i Add it to the tank near the pistol shrimp and the pistol shrimp blast the goby and pouring out sand. Is my pistol shrimp a wrong type? (Sorry for bad english)

 

[ISpeakForTheSeas]

Is my pistol shrimp a wrong type?

Yeah, Alpheus heterochaelis won't pair with a goby - they actually pair with Atlantic Mud Crabs (Panopeus herbstii):

Just pointing this out, Alpehus heterochaelis is actually a known filter feeder, not a predator:

"Along the U.S. mid-Atlantic seaboard, the bigclaw snapping shrimp, Alpheus heterochaelis (Say), is associated with intertidal and shallow subtidal soft-sediment habitats (e.g., oyster reefs and mudflats) and is reported to be restricted to shallow burrows and depressions beneath oyster shells adjacent to salt marsh habitat (Hay and Shore, 1915; Williams, 1965; Nolan and Salmon, 1970; Lippson and Lippson, 1984; Williams, 1984). These shrimp are relatively sedentary, filter feeding from within their shelter from waters drawn into burrows by paddling with modified pleopods (Nolan and Salmon, 1970; Lippson and Lippson, 1984)."*

"Alpheus heterochaelis, another filter feeder, is commonly found among shells (Williams 1984)"**

Symbiosis between an Alpheid Shrimp and a Xanthoid Crab in Salt Marshes of Mid-Atlantic States, U.S.A.

Abstract. Instances of mutualism and commensalism between alpheid shrimp and other marine invertebrates and fish are common in tropical waters. In this stu

academic.oup.com

https://www.researchgate.net/publication/232430934_The_role_of_oysters_in_habitat_use_of_oyster_reefs_by_resident_fishes_and_decapod_crustaceans