myjack dempsey is 3-4 inches long can anyone tell me how old it is roughly 
and what size are you able to sex them
and what size are you able to sex themJD age
- Thread starter imamazeing
- Start date
A few years back it was fairly easy to sex JD's the males had pointed dorsal and anal fins and the females were rounded , however with the advent of hormonal foods to enhance the colours of juvenile fish this has gone by the board , The only semi reliable way to sex them these days is by the spangles on the head of the fish , females the spangles go all way down to bottom of head and become more blotchy as the spots merge and males dont .(some females have less spangles than others and some males more than others hence a bit of a no mans land there but fortunately those are lot less common).
I am guessing 6-7 months old? I am not sure on that one.
I am guessing 6-7 months old? I am not sure on that one.
