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Hello, i need to know the sex of some fish :

This is the group of 4 fish :
And this is picture of fish one by one :
1 2 3 4 Can someone tell me the sex picture by picture ?

Thanks a lot for your answer.

Two things here, what size are these fish? It is hard to sex them until they get to about 2.25 to 2.5 inches unless you vent them from underneath (see their sex organs).

More importantly, fish number 2 looks to be a snub-nose and you should return it for another fish or a refund. This is an uncommon deformity which is not genetic, however at the prices charged for zebras you re entitled to receive undeformed fish. In fact, in the group picture it appears as if two fish, the ones on each end, are snubnosed. (Fishes #1 and #2.)

To get more information on snubnosed zebras, do a site search for the term "snub" (w/o the quotes).

I know, 2 of these are mops. The size is 6 cm (more or less).