the fish that i thought was a loach but...

But it was a goby type fish. i went to the batu ferringi waterfall for quite a many trips and failed to catch it. Some trips were devastated by heavy rain, where it makes it very difficult to net fish, and some by me, i went there just to remember my fish net is at home....HAHAHA...but..but...This time, or today, i successfully caught it when i just simply try netting beside rocks, and hahaha....and as my friend brought a see through plastic tank, i quickly put it in, and i thought LOACH!!!!!....but no..it looks rather like a goby, but i thought gobies are marine fishes. After taking it home, referring to some REFERENCEs, i am sure, it is no loach....If i am not wrong, it is (Pseudogobius isognathus) which according to what i read is rather special for this fish(goby)to be found in torrent streams of penang and rather well adapted to this kind of habitat.