I picked up a couple of black mollies, and wanted to ask how to tell between a male and female. Also, I notice they nibble at the hair algae in the tank. is this normal?
Is the anal fine (then fin near the bum) pointed?
Is the dorsal fin large?
If so then these are males
females have triangle anal fin and smaller dorsal fins
They should breed I have white Molly's and two gold Molly's mine haven't breed yet but haven't had them long (white Molly's) as for the gold the mate had died when my power went out a month ago, and I only have two females, give it time,