I might be green still but what does the black mark on the fin mean?
Not sure. I just thought it was cool. Below is a response I found on the web:It is possible that this condition is genetic, viral, or related to some environmental factor unique to certain bodies of water that stimulates the increased production of melanin. *This unusual pigmentation (melanosis) has been observed on bass within most reservoirs and in other areas of the country for many years. *The Fish Disease Diagnostics Laboratory at Auburn University is currently investigating the cause of hyperpigmented melanosis in *largemouth bass.