Hi,
I'm new to the world of aquarist,
I've started not to long ago when my dad gave me one of his aquariums
A 150Gallon one not 150L but 150 G (yes its huge)
and so far i have plants and 4 gouramis
2 opaline and 2 pearl
I have 2 question 1st,
how do i know if a gourami is male or female? I...