Mandarin help


New member
I need help i have a 120g tank taht has been established for 2 year and i have a mandarin gobie but i can't figure out how to tell if it is a male or a female... Any help is helpful. If anybody has any advice on how to breed banji cardinals that would help to.


New member
I believe that they male mandarin has the spike like dorsal fin. I could be wrong but I think that I read that somewhere. I'm sure someone else with more knowledge than me will chime in soon if I'm wrong. HTH



Moderator, 10 & Over Club
Premium Member
Yup, the first dorsal spine on the male is long, generally going back to the tail.


New member
That was the rule I went by when I purchased mine. Either I lucked out or thats really the difference between the sexes. Oh by the way my pair spawn in my main display almost on a monthly basis.