What type of Bichir is this?

[Dr.B]

at what size can i know if it's a male/female?

depends on the species

 

[flowerhornfishman]

depends on the species

endli

 

[Dr.B]

endli

8-9" give or take a few

 

[mikehagan]

Id say you can sex bichirs at 7"+. Maybe I just haven't been wrong and ive guessed right when in reality there was no way I could tell the difference.

 

[Cholly]

depends on the species

Yup. It's maturity thing more than a size. 6 months to a year with most upper jaw, 2 to 3 years with lower, if memory serves me correctly.