Sexing green wolf eel blennys

desertwitch · 04/16/2008, 07:28 PM

How can I differentiate between male and female wolf eel blennys (Congrogadus subducens)? I'd been told (perhaps erroneously) that the one I've had in my tank for 6 months is a female - it's mostly brown, not a spot of green on her. The same person also told me the males are more green. Tonight I introduced a green-colored one who is a bit smaller than the resident blenny. There was some strange behavior at first. The resident blenny turned sideways and kept rubbing on the newcomer. Both would sort of "shiver" occasionally. I'm wondering if that is them just establishing a heirarchy or if it's courting behavior? The resident blenny followed the new one about for quite a while, not biting or nipping. Now they've both gone their separate ways in the tank. I have a 120g reef tank with lots of rock for hiding. Any info on these fascinating creatures is greatly appreciated. I've only been in this hobby about a year.

bertoni · 04/17/2008, 11:40 PM

You might want to try in one of the fish forums. Maybe the aggressive fish forum?

http://reefcentral.com/forums/forumd...=1&forumid=139

04/16/2008, 07:28 PM	#1
desertwitch Registered Member Join Date: Apr 2008 Location: Austin, TX Posts: 11	Sexing green wolf eel blennys How can I differentiate between male and female wolf eel blennys (Congrogadus subducens)? I'd been told (perhaps erroneously) that the one I've had in my tank for 6 months is a female - it's mostly brown, not a spot of green on her. The same person also told me the males are more green. Tonight I introduced a green-colored one who is a bit smaller than the resident blenny. There was some strange behavior at first. The resident blenny turned sideways and kept rubbing on the newcomer. Both would sort of "shiver" occasionally. I'm wondering if that is them just establishing a heirarchy or if it's courting behavior? The resident blenny followed the new one about for quite a while, not biting or nipping. Now they've both gone their separate ways in the tank. I have a 120g reef tank with lots of rock for hiding. Any info on these fascinating creatures is greatly appreciated. I've only been in this hobby about a year.

04/17/2008, 11:40 PM	#2
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	You might want to try in one of the fish forums. Maybe the aggressive fish forum? http://reefcentral.com/forums/forumd...=1&forumid=139 __________________ Jonathan Bertoni