I just leave the coraline algae on the back wall, my tank is too narrow to try and scape with the rocks away from all the glass, gives the cleaner shrimp something to hang on to when eating and annoying the fish.
I have found the male Colisa laila are always agressive and territorial, if they can see another fish, they will chase it. The female always ended up hiding in the bushes in fear of getting chased and rarely ventured out.
I ended up planting a wall of Valisneria across one third of the tank where he hung out so that the other fish could swim about in a bit of relative peace out of sight.
I see it as two fish circling around eachother, the bottom one is black and white and spikey looking, viewed top down, the one on the top is sideways with flowing fins and its left eye looking at the viewer.
Could be wrong, though!
The little bladders have trapdoors and hair triggers, when they are activated they suck in whatever has the misfortune to fit in the gap - then get digested...
Awww... someone looks right out of it!
One of our cats is sitting in front of the fire wishing it to spontaneously burst into life! The stupidest part is - the other fire is lit and it has not worked it out yet!