I am having the hardest time sexing my bichirs........Some sites say the larger ones are female.....Some say to count their top spikes ......And some say to observe their under fins .......When a person has happy and active fish, all of these ideas are rough and challenging to accomplish. Is there an easier way? I do not believe the size theory.....
Male or Female?
- Thread starter asenarose
- Start date
Easiest way to sex them 100% is the anal fin. It is the fin that is separate from the tail on its underside. Males tend to have larger muscles on that fin. Females have smaller muscles and looks as if it's just a fin with no muscle.
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Some bad pics but the top is a male Senegal and the bottom is a female endlicheri. The anal fin on the male looks like a bulge
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