Two of my electric blue acara I have 4 all juveniles from 2-3 inch my larger male and lager female ( what I believe is a female ) have started to get white on there anus? Reproductive gland ?sorry not sure the term And the other two havenāt , plan on doing a water test as soon as I get back from work as just didnāt have the time this morning so canāt give the exacts yet but did last water change 3 days ago so Iām assuming itās all well , iv attached a few photos , if any body can tell me if this is normal and just a stage of maturity or is something happening to them that I need to fix , thanks