Goby

This morning I showed B3 the 5 mudskippers.  He immediately noticed they are not mudskippers but goby fish.  He is quite amazing.  I noticed the eyes are smaller and not prominently on top of the head.  But still thought they are mudskipper as they are large.  However, the goby stayed at the bottom of the tank all the time unlike the mudskippers.  I always catch the small goby fishes at low tide.  They dart about very fast.  Now the big ones seems like a slow coach indeed.