The first pic on here under Synchiropus picturatus is a male. The sharp tip on the dorsal will not be there on a female.
http://www.fishbase.org/Photos/Pictu...0&what=species
Actually, Mike has the perfect mate for Mouse, but has had no luck catching her so far. I'm keeping my fingers crossed. The big tank is just crawling with bug life after I used live phyto/rotifers for a while.