Sexing panda garra

[nik_n]

Hi. I have 3 panda garra in my 180l tank. I would like to know their sex but I don't have any experience with these fish. I kept the for about 6 months now. My guess is that I have 1 female and 2 males. I feed them almost everyday, together with my bristelnose plecos and the there are a lot of algae for them to feed on. I know that females tend to be more plump than males. Here are some pictures, can someone try and sex them?

 

[GuppyBreeder180604]

Sexually mature males develop a series of noticeable tubercules on the head, along the lateral line, and around the caudal peduncle, and tend to be slimmer in the body than females.