Years ago, I randomly ended up with a female Rhinogobius Wui (called at the time) in my overstocked, underfiltered 10 gallon. She was instantly my favorite fish (it took me months to find out what she was!). Now, after much searching, I finally got a group and a dedicated tank for breeding. I got a group of 6 in, and I think it's 4m/2f, which will do. They're young, but getting close to breeding age. One of the males is emaciated, but he's got a chance at survival. The other 5 look very healthy, if just a bit thin. Their thinness won't last long! I have a 10 gallon tank that they're all in currently, but after I pick out the best looking male and female (and hopefully nurse the scrawny one back to health), I'll put the remaining 4 up in my 20 long river tank, leaving just the pair in the 10. My plan is to feed, change water a lot, and wait. Theoretically, these are very easy fish to breed. If they do, I'll pull the female to the 20, and then the male after 15 days or so, and hopefully I'll have a bunch of young! Anyway, that's the goal. Here are some pics. They just came in a few hours ago, so they're not in full color yet.