Pygmy, Hastatus, or Habrosus cory catfish love to forage in white sand! Their black/white colorations also match the lighter colored substrates really well. They will not only look great in a white substrate, but will also thrive well with fine, white sand.
More colorful nano fish species like Endlers, Boraras, Sundadanio, Green Neon Tetras, CPDs, Emerald Dwarf Danios, Badis, etc. like darker substrates/backgrounds so they feel less skittish and will show their colors better.
I'm looking forward to your new nano tanks!
Cory catfish species love sand!
More colorful nano fish species like Endlers, Boraras, Sundadanio, Green Neon Tetras, CPDs, Emerald Dwarf Danios, Badis, etc. like darker substrates/backgrounds so they feel less skittish and will show their colors better.
I'm looking forward to your new nano tanks!
Cory catfish species love sand!