I love the redline shark and will keep them in there until they outgrew the tank and i have to move them to the 4 feet tank. The rummynoses seem to enjoy their "big brother" presence (they school pretty well)..
Planning to tie taiwan or weeping moss over the branches.
I will be apprehensive of using Cladophora aegagropila (moss ball?). I use it once and it spreads all over the tank and is so hard to really get rid of them.
Thanks for the suggestion on improving the pictures.