What is the sex?

[Smithmode]

2 red jewels
2 blood parrots
rainbow shark
clown loach
Pakistani loach
EB JD
frontosa

all have been together with no problems they don't pick On each other. Except the JD and jewels they don't like each other sometimes Lol but never any damage.

 

[Ponera]

I bought a 6 inch bichir once that was very female looking, to go with my male. Then a month later the anal fin got wider and now I have two males.

 

[Smithmode]

Mine is about 8 inches right now.

 

[Smithmode]

So got at new bichir. Put it in the tank and it's been about 20 mins and they have crossed paths a few time. The first one that pics are off has gone side to side with the other and looked to be almost cuddling with it Lol...not sure if it means anything but hope they are opposite sexes

 

[ZidanSanz]

Male, because he bend his anal fin

 

[the lion who ate the sun]

What are the definitive methods of determining sex?

Is this chart accurate?
View attachment 1047116

 

[Dr.B]

Yes, but the difficult part about this particular senegalus is that it's a longfin therefore distorting the chart. So the added length to the anal fin adds to the difficulty of sexing it. I said female, because of the lack of denseness in the anal fin which all males need to fertilize the eggs. It just appears to be male because of the apparent cupping that looks like is going on, but as the OP said the anal fin has been like that for an extended period of time leading me to the conclusions that it's a female

 

[the lion who ate the sun]

Making Fyodor (pictured below) a male?



Fyodor

 

[the lion who ate the sun]