I tried some anubias nana (not petite) and anubias congensis in with my gold fish and it did not do well. the goldfish left it alone but both kinds started to get holes and leaf melt. tank is 20 long, sand substrate and no ferts added. I also wasn't running a light but I recently ordered a pheonix led clip on light. I really want to keep it low low tech. no plans to dose in the future. So in your guys opinion what is the hardiest form of anubias? I was thinking I might try A. barteri.