oscars

[gigas12]

what are the sexual differences in oscars'

 

[south coast nelly]

the females lay the eggs and the male fertilizes them,,,,
sorry mate but there no sure fire way to sex oscars until they pair off and lay eggs

 

[Cichlaholics Anonymous]

oscars are notoriously hard to sex. Venting them would be the best possible way

 

[benzjamin13]

Vent them

 

[Toby_H]

oscars are notoriously hard to sex. Venting them would be the best possible way

And venting them means closely inspecting their "private parts"... Oscars are even more difficult to vent then most other fish their size... It's also extremely difficult to vent them accurately until they are near full grown...