One of the LFS around me has a mogurnda goby. Theyve had it for a while and i was thinking about finally picking it up. Its about 4" and I think they currently have it in brackish water? Its in with some mono's. One of the tanks i would consider putting it in include, 6" silver aro, 3 2" dats, 5 2" Clown loaches, 4 types of plecos between 3-5", and the other tank includes 1 3" piyara, 6 polys ranging from 5-8", a 5" green phantom pleco and a 5" pim catfish. Would the goby be alright in either of these tank or is he going to try and eat something out of either tank? Hes currently $20, is this a decent price? I'm sure he will need a cave or hide to hang out in. Will this guy scavenge for food like my polys or will I have to drop it in front of him, I think theyre ambush predators right? Sorry for all of the questions, I couldnt find much info about them online. This is what he looks like (not my pic). Thanks ahead of time!