I'm planning to set up a New Guinea biotope with Dwarf Neon Rainbows (Melanotaenia praecox) and Peacock Gobies (Tateurndina ocellicauda), but I need some advice as to what plants I should use. I'm after plants which are native to New Guinea or Australia. I doubt I'll get much back with this question as it's so specific, but if anyone is going to know, I imagine it'll be you plant-lovers! 
I will be using undergravel heating cable, fertiliser substrate and CO2.
I will be using undergravel heating cable, fertiliser substrate and CO2.