Hi there,
I have a large 200Ltr tank which is mature with the following
1 x Rainbow Shark
1 x Rainbow Fish
4 x Tiger Barbs
3 x Golden Barbs
12 x Columbian Tetras
Evreything was fine until I introduced 3 new Dwarf Gourami (1 male 2 female) whereupon the Rainbow fish took exception to the male...