Hello all, thanks for stopping by, new member, first post.
I have a Knight Goby. Not sure on if its male or female, and not sure if they are live bearers or egg layers. Well needless to say the goby has gotten Really fat the last few weeks, ive had 2 of my baby mollys dissappear(bones and all), i know how gobys can be teratorial and will eat smaller fish. But this ones been Fat for what seems like a long time, and recently started hiding a lot. Can anyone help me on a few questions? May the goby be pregnant(if its a livebearer and not popping out the babies because theres no male in the tank) Can it just still be fat if it had eaten the baby mollys?

Thanks guys, ill try to post a pic of him if he comes out of the rock.

Here is a link that I think will answer your questions http://www.wetwebmedia.com/brackishsubw ... byfaqs.htm