I can see a potential for using this program. Sorry I no longer code. Been too long and I never learned C.
You show a pleco as being peaceful and if you qualify the type it may be more accurate. A full grown common is anything but. Serpae tetras are semi-aggressive as well and belong with the likes of tiger barbs and blackskirt tetras. None of those make for good community fish but do very well in a semi-ag tank.
Good luck and keep up the good work!
Got your point about common pleco.
Serpae was an error on my part - thanks. I have a question for this one and other "aggressive" tetras. Are these guys also aggressive against each other, and not just against other species?