Lees Betta Hex DualLees Dual BettaHex uniquely houses one or two Betta Splendens (Siamese Fighting Fish) or even a fancy goldfish. The close proximity of the Bettas stimulates them to intensify their colors, spread their fins and flare their gills. Uniquely houses one or two Betta Splendens or even a fancy goldfish Stimulates intense colors Includes gravel and plants Dual BettaHex makes a great gift idea for Betta or Goldfish Fanciers. Nest or stack multiple units.