hi please i need help i have recently set up a tank of approximately 45 litres and have lots of plants and hiding places. my fish are:5 cardinal tetras and 5 neon tetras two swordtails and 1 pleco. i am planning on buying another pleco and TWO BLUE NEON DWARF GOURAMI but my dad says they are viscious and kill neons. but i really want to get one female and one male. can anyone help me please??? thank you!!!