A CURIOSITY OF THE LIVE-BEARER WORLD The Half-beak or Dermogenys/Belonsox   A SHORT HISTORY Two very strange live-bearing fishes that are sometimes kept in an aquarium are Dermogenys and Belonesox.  The family Hemiramphidae (Half-beaks) is common throughout tropical seas, but Dermogenys pusillus inhabit the brackish rivers of Malay, Siam and the Dutch East […]