No, It is easy enough to google each of these but I'll give you a hint - soft water & brackish species don't mix. Neither do territorial surface swimmers.
Red clawed crabs should be kept in brackish with a beach & can eat fish.
the bumblebee gobies are brackish water fish, apart from that i don't see a problem myself. so long as the crab can get to a dry spot once in a while or can just hide when it wants. yes the crab will try to escape though, yes it will try to eat the fish (they can be very cunning doing this btw) but generally dont. the crab will howver take offense at any live plants and destoy them.
ps, i'm not well versed on the gourami's. very hard to keep from what i hear though
