[quote=”helene” post=2082]They are under 1 cm – very small. And no, I really dont think you can tell whether they are male or female, – I am not sure, but I think most fry look ‘malish’ when in this size. [/quote]
So they really all have this iridescent colours in dorsal and anal fin – and lose them again later, if they are (or become?) females? When does the gender differentiate? As I understand, the gender of fish is not determinated at the moment of fertilization, but later, after hatching? When are the sexes fixed?
Can you estimate the approximate age of the fry at this stage?