i've just shifted house and have set up my 4 foot tank again. it had guppies and platies in it for a while with my pleco, red tail shark and hopplo catfish. Now i've put all the guppies and platies into a smaller tank and my Kribensis are now in the 4 footer along with a bristlenose and another pleco. i want 2 put some fish that'll tend to swim in the mid range of the tank as all the others keep 2 the bottom mostly. but i'm having trouble deciding what to get. i was thinking maybe some dwalf and opaline gourami. also would these be compatible?? and possibably some tetras.