A male of my Sicyopterus sp seems to have been in heat, and a color of the body changed loudly and has begun to chase around a female.
It was sold as an imported Sicyopterus goby by Indonesia.
There is a case sold as "mountain rock goby".
The video clip is uploaded in Youtube, too.
http://www.youtube.com/watch?v=xQynXiVOCOU
The detailed past post about these gobies is this place.
http://forums.loaches.com/viewtopic.php ... c&start=45
Male







Female?



