Looks like Dormitator maculatus to me. A nice, friendly brackish water fish. Can be kept in freshwater for long periods, but seems easier to keep in low to moderate salinity brackish water. Excellent in communities with species of similar size.
Omnivorous, but like most sleepers will eat any small fish put in the tank. But, and I can't stress this strongly enough, don't use store-bought feeder fish unless you want your sleeper goby to die. This is non-negotiable. You wouldn't begin to believe the number of e-mails sent to fishkeeping writers on magazines and web sites about fish that get sick after being fed goldfish and the like. It is simply staggering. From lionfish with swollen livers to oscars with worms, the list of sick fish is depressing.
If you want to feed small fish to bigger ones, then you have to breed your own feeders. Livebearers are the best choice. We have a pinned topic
here.
These gobies will eat most anything, and should be given at least some plant material. Wild fish apparently eat mostly plant matter and small invertebrates they sift out of the mud. Prawn, whitebait, earthworms, shrimps, etc. can be used as supplements.
Grows to 70 cm in the wild.
Cheers, Neale
