You are bidding on 2 Kryptolebias marmoratus bonairensis Lac Bay, Bonaire Jan 2014 (Site location 12°06'37.7"N 068°13'02.4"W).  These fish are around 1".  This is a self-fertilizing fish, so really one fish is like having a pair.  I have kept them at a salinity between 1.010- 1.026.  They can survive in freshwater, but I recommend keeping them in water with marine aquarium salt (I use Instant Ocean).  The eggs survive better in brackish/salt water.  I usually collect the eggs and i...