Still don't know if one can determine their sexes for sure and it might aswell be 5 angry males
(or why not 5 females) for all I know still my guess is that it's 2+2 with 1 being to small to tell(a bit concerned it's so much smaller than the others). The 6th sibling was left in the previous tank since it got some deformities sadly I am pretty sure that one is female. It will move to a new "display" tank I am setting up aswell that's 180x20x20cm. I do have a longer video of them so one can see them moving around etc not sure if it's possible to upload to the site or what types of links are allowed?
Edit: Link to a video of them if it's of interest to anybody or if someone could crush my hopes of having a pair! https://vimeo.com/666512179 . Excuse my voice in the background, trying to make a very interested dog stay put while filming.
) . I think the plecos themselves might still be to small to sex but pics should be fine(but maybe poor since they didn't want to sit still).