Nope though some do adapt reasonably well to freshwater
Mudskippers got their name because they like to walk on mud and land. Mudskippers are amphibious fish. Mudskippers can be found in tropical and subtropical areas.
spuids
Yes, they do.
Yes, mudskippers have a mutualistic relationship with the burrowing mud shrimp. The shrimp creates burrows that the mudskippers use for protection during low tide, and in return, the mudskippers keep the burrows well-aerated and free of debris, benefiting both organisms.
I am not sure if they sleep or not. I've surfed the internet on it and no one knows, I guess. I did find out though that they breath through gills in water and adapt to breathing air on land, so if you get one I suggest you fill the tank with half water and half soil.
The scientific name for a mudskipper is Periophthalmus barbarus or Periophthalmus koeleuteri.
No There Are Plenty Around
Because they are anphibians
gaknee
the mudskippers
mudskkipper