You could also look into Blue Spotted Hill Trout. I don’t know a ton about them but have come across specimens for sale online every so often.
I do like GD, but I want something with different patterning, the patterning on a giant danio doesn't resemble any salmon or trout.Giant danios are a good option. Fast enough to possibly stay off the bichir menu and if they are eaten there cheap to replace. $1.99-2.99 at most any lfs. I keep a school of 16 with a 36” lung fish. There going on 6-7 yrs old. Highly underrated dither IMO lol..