not sure if it is a fungus or just a coloration on him/her.. i have a 5 inch red devil that is all orange .. but in the last few days we have noticed that there is a black streak growing on his top fin at about the point near the back .. and also a lil bit on the tail fin .. would anyone know what this is ???. if they can all of a sudden just grow a back streak or is it a fungus/parasite/or what.. thanks in advance for any help with this .. jsut want to know if to treat it or leave it and what treatment should we use ???
Marn
Marn