From what I read scarlet badis are just as picky about needing live/frozen food as puffers... but that was over a year ago.
The glass surfing with bettas is just hit and miss.. not all of them will do it but some will. I only have the anti reflection inserts in 2 tanks-1 for a true glass surfer-the others just to make my platinum gold betta pop against the dark backgrounds (never tried to see if he'd glass surf without it). The other 9 betta -7 males 2 females- tanks with glass don't have inserts, and there are no glass surfing issues. Granted some of those tanks are curved bowls/vases so I couldn't do anything if the resident did glass surf except rotate bettas between tanks.
Only other thing I can think to recommend is a decorative large breed snail such as nerites or mystery... most fish prefer long tanks over tall tanks for swim room so the 5g tall is a bit limiting.
The glass surfing with bettas is just hit and miss.. not all of them will do it but some will. I only have the anti reflection inserts in 2 tanks-1 for a true glass surfer-the others just to make my platinum gold betta pop against the dark backgrounds (never tried to see if he'd glass surf without it). The other 9 betta -7 males 2 females- tanks with glass don't have inserts, and there are no glass surfing issues. Granted some of those tanks are curved bowls/vases so I couldn't do anything if the resident did glass surf except rotate bettas between tanks.
Only other thing I can think to recommend is a decorative large breed snail such as nerites or mystery... most fish prefer long tanks over tall tanks for swim room so the 5g tall is a bit limiting.