Fish tank colour play a part too. If I were to house the common reddish finnage banjar red, grade 1.5 or grade 2 red in a pale looking bare tank or some call it white tank, they will show yellow finnages. But once place in dark background tank with dark base they will display reddish finnages.Kolossus;4379862; said:Just the man I was waiting for. I've seen some smaller specimens coined "banjar red" as well with the yellow tail. Is the yellow tail on the banjar reds, even at a young age, not as common as I suspect?