Sorry for the late reply, Liz. No, I personally have not bred any Polypteus species, but I do hope to have an opportunity in doing so in the near upcoming future.
TY, icthy for explaining the sex differences to Liz. Females can also be identified by their largeness/thickness in girth of their whole half body.
This monster endlicheri happens to be a male... notice it's wide anal fin. Males will swell and cup their anal fin while during trying to mate with a female.
Thats one big boy
