I know I'm not the first, and won't be the last to put a molly into a marine tank, but these guys are amazing.
I put them into my QT principally to act as canaries, hence them being black so any whitespots would be immediately visible.
What I didn't realise though is how prolific they were at removing algae. My QT has being going through the uglies, and was experiencing some brown dust-type algae on the floor of the QT.
Within an hour it had all gone.
I'm now thinking about some colourful versions for the DT.
Is it me, or do they look like Pingu talking (for those old enough to remember) when they peck at the algae?
The only down side is they do seem to defecate a lot, especiaslly as I hadn't seen any come from the clowns, but these little chaps can crap for England