Is this behaviour normal?
After moving my 4 rosy barbs from a temporary 4 gallon to a 80L tank, they were behaving normally, but after around 3-5 days, one male developed more colour, larger fins and is now highly aggressive to the other male, this includes nipping when the other male gets close, and relentlessly chasing the females
u/ooflol08 — 6 days ago