i know guppies can live in saltwater and some mollys i believe but are there other ones
Answers:
salmon
glass eels dusky panther goby's dragon goby's
and some archer fish but they are ostly brackish
The ever Large Bull Shark
a bunch of fresh water eels, puffers, somealready said bullsharks. and salmon. Pretty much any fish that lives near the mouth of a river where it feeds into the ocean can be slowly acclimated to saltwater.
rainbow trout/steelhead
definately mollies and angel fish, but they must be very slowly acclimated to the new water condition
Hope that helps
Good luck
EB
Sorry i had to correct person above me. No angelfish are cichlids. cichlids are freshwater fish. (With the exception of Orange chromides which are slightly brackish water cichlids)No Angelfish!! you'll kill them.
Anyhow Gobies should be fine. Fan Dancer Gobies and even Wasp Fish.. Although technically they're brackish water. most puffers need brackish to marine conditions. Even if they sell them as freshwater. These include figure 8 puffers. Scats and Mono Sebaes start out in freshwater but eventually need saltwater.
I have 3 angelfish and I add salt to my aquarium and they do very well. As well as my Gouramis. They have never been sick nor have had any problems. I add 1tbs every 10 gallons and I was told this by a few fish stores.