Good question - they would have to be exposed to it - and that comes from the marine environment, so I'm not sure what the mechanism for that would be. A koi pond near a bay perhaps....
I hope you're not disappointed with your Mollie's real time consumption of algas. I purchased two pair of mollies at an unusually older (and knowledgeable) LFS near me. I was warned at the time I bought them that they would eat algae from my SW tank ONLY IF it was their ONLY food source, but NOT if they had any additional food via foods offered to the other fish in my tank. Duh, I didn't listen to them, but they were right on. I recently returned 20 plus of the original's offspring to the same LFS. I elected to keep a few large pregnant females and some males and put them in my DT. Their offspring won't last long in the DT, but will no doubt add to the "thrill of the hunt" for any of my carnivore fish that can consume them.
Before it was considered a bad thing I used to cycle with mollies but that’s it, I never really had em long term in a reef tank except feeder escapees. They do leave lip imprints on glass but again that was freshwater… Anyway I’m gonna be on the lookout for that, thanks
Just so you know I am not a reef squad or fish medic I am just a dude that has kept freshwater fish his entire life and saltwater off and on since the late '90s. My knowledge is not of any squad level but I know a thing or two about a thing or two (just about enough to get into trouble). I was debating how to address your post. Thanks for the vote of confidence!
Appreciate it anyway…..I don’t know a soul here personally, but for all the answered questions I think more than a few go without follow up or thanks, that’s all … I’m not perfect either so thought I’d make sure this time
