Loaches Online Forum

Hi Like a lot of fish, Coolies can change their colour depending on mood, but usually associated with light or stress levels. In my experience it is unusual for them to be changing this drastically and this often. What lighting are you using and how long? What temperature is your water etc? the lig...

Hi everyone, I have 2 kuhli loachs that have for the last 2 months been alone in a 10 gallon tank, They both started out black. But one changed to white after about a week. Then a bright red, and back and forth from black white red, sometimes it changes within half an hour. Other times it will stay ...