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Sexing young apistogramma cacatuides?

sahenson21

New Member
Messages
4
Good morning!

We have several spawns of apistos growing out, but I am finding it difficult to sex the young fish. What are the best signs to look for to know for sure that it is male/female?

We have them in growout tanks, so I am always worried that there will be sub-males that appear to be female. I am also just not confident picking out young females at all.

Please help!
 

MacZ

Well-Known Member
Messages
2,870
Location
Germany
It's 3 in the afternoon, but hello! :)

Are they domestic fish? (Colour breeds?) If so this is not the easiest, as by now females have been bred to look almost like males including fin colouration and shapes.

Generally: Under 4cm it's virtually only guessing.
 

sahenson21

New Member
Messages
4
Thank you for the response! They're triple reds if that helps.

What are the first things to look for to differentiate them as they get to that 4cm mark
 

Mike Wise

Moderator
Staff member
5 Year Member
Messages
11,158
Location
Denver, Colorado, U.S.A.
If it's guarding eggs/fry then it's a female. Stupid I know but true and couldn't help myself. In all honesty if you can't sex them then there is no easy way to sex them. One option is to put all the fish in 1 tank and remove males to another tank as they become obvious. The problem with this is that there have been indications that apisto females can possibly change to males in the absence of males.
 

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