i would say female only because it still has the black stripes instead of the jaguar pattern that mature males get. The best way to find out is to vent the fish. Take the fish out and flip it over and look at the size of the two holes, then put the fish into a bucket for 20 min. Take the fish out and look again. If they got smaller, it is a male. if they stay the same it is a female. (Obviously put the fish back into the tank after you have guessed on the sex of the fish.)