Pistol shrimp goby pair

[pirate]

Well I have a paired up tiger pistol shrimp with a goby (forgot what kind). They have been in my tank for a about 6 months now. I've added some more fish and I haven't seen either of them since! I've seen the tigers claws poking out during feeding time ( and hear him snaping his claws) but that's about it. I've been spot feeding sinking shrimp pellets at there cave opening.
Buts it's about a week and I haven't seen the goby out at all and I'm worried! Will he eat the pellets? I've only ever feed him brine. Would the tiger eat him? They have been toghter for awhile on my tank ( bought them paired up).
Thanks