I recently bought two gouramis and were told they are Thick-Lipped Sunset Gouramis. When I got them, they were all orange. Now they seem to be turning black? Can anyone tell me if that's normal? Or should I do something? Thanks!!
Welcome. I can't say for sure what type these are, but they look like dwarf flame gouramis to me. Do you have readings in PPM for ammonia, nitrite and nitrate? If not, big water changes need to be done often.