How do you sex them, can you go by eggspots or is that not as reliable? I have 4 of them just wanting to try and make sure i dont have like 3-4 males. Thanks guys
The most reliable way, as stated, is to vent the fish. The only problem is they need to be atleast 5-6cm long before you can truely see the female hole showing top be big. It is easy if the fish change colour.
Catch them, turn them over and look at the holes. Females have 1 small and a large one at the back.