Dwarf frogs are fully submerged and may work, depending on your other stock. They're practically blind and very slow to find food so they can't have much competitionLike a box that had a big air bubble in it?
What about dwarf frogs? I know I had one before and it hid and I dont think it made it up for air very much (or at all). But I also had no idea what I was doing then. Now I know a lot more.
I know it says 18in tall or shorter. Pretty sure my 29 is 18in tall. So maybe a suction cup land thing for it to rest on and then go the rest of the way up? Or if I get rocks to make a structure, they could start on that and get to the surface easier.
I remember some people saying this about the salt. Would guppies be fine adding salt? How about a dwarf gourami? (planned in the stock, but not final). If not, what are some fish that would be fine with salt?If you don’t want to worry about having true brackish water, you can add half this amount of salt and the fiddler crab would still be fine. For fresh water aquariums it is good for the fish to have some salt added to the water. It helps the fish to have a protective layer over them, thus preventing diseases.