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 1.005-1.026. Currently I keep the fish in 2 tablespoons of instant ocean salt per gallon of water. They can survive in freshwater, but I recommend keeping them in water with marine aquarium salt (I use Instant Ocean)...