Killifish In Same Tank As A Betta Splendens?

[FishyWishie]

My tank currently has

12 Diamond Tetra
20 Harlequin Rasborra
9 Khuli loaches
8 Corydoras

Im picking up some Golden Halfbeaks for the top of the tank on Thursday and was wondering about the compatabilty of steel blue killifish with a betta splendens ? My betta is a big softy and doesnt pay any attention to any of his tank mates currently but I thought I'd best check with the experts

 

[BigC]

Fundulopanchax gardneri sp and spp are a bit boisterious as they age, I cant say for sure but they may bully the betta to some extent.
Probably better to seek out possibly Aphyosemion striatum or australe.
Regards
C