My archer was in a complete non brackish tank in lfs when i bought a year ago .i add salt once a week when i do water changes..he eats great a grew a inch since i got...
The archer adapted very well .He eats dry krill ,plankton,frozen shrimp/blood worms,....somtimes when i leave the top open during water changes he spits water straight up in the air ,its a great fish
