Sexing satanoperca jurupari...

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we4wieners

Polypterus
MFK Member
Apr 21, 2010
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Atlantic City, N.J.
have two geo's now. are there ways to sex them. i would like to keep track of the genders. would like to add one or more later. eventually like to have them spawn.
 
Difficult to sex, as females can have decent extensions. Behaviour is probably the biggest indicator short of netting and venting. Females will flare and display to eachother - males will straight up face eachother off, particularly sub-dominants.

With two you're out of luck unless they spawn. Should be kept in shoals of at least 4.
 
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