Once established, it is a weed. In a high-light environment, I have some 36"+ stems trailing the surface. It is not a prolific brancher. IME, if you top it, the top portion tends to rot with a few side shots forming lower down the stem. I also find it prone to melting when re-planting or moving between the tanks. The bottom of part of the plant melt but with the tips continuing to grow.
The picture below is somewhat unusual for me as it only gets that color right under very intensive light. Otherwise, it mostly stay green with dark burgundy stem. I'll try to take some pictures of the 'normal' form.
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It came from a friend who visited Tropica in Denmark. It was in one of their display tanks as a test plant they decided not to use in their line-up for one reason or another. It's almost certainly a variety of mexicana.
You won't find much info on it because outside of the few people who bought it on here or APC from the few of us who have it not many people have heard of it.
It's pretty easy to grow. I've not had the same issue with topping it. I always top my Rotalas and leave the bottoms to regrow.
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Really? I got it from Barthog and tbh it seems just as big as the cuba I got
Its the one that is taller with a red stem. That's what I got as R. Bangladesh. The thing in front that is slightly pink is 'Pantanal' and Cuba is somewhere in that mess as well.
I just planted it all last night, and these pics were right after planting, so the plants hadn't adjusted or anything yet.
That's because the 'cuba' is significantly undersized.
This plant is difficult to scape with since it grows so damned fast once it gets established. You probably need to trim it once a week to keep it in check and not strewn across the top of the tank. Maybe if you dose your ferts on the lean side it it won't be such a weed. OVT's pic is the nice growth you can get from Bangladesh but it also grows very lanky as well. I had it growing under a 4 bulb Tek and sometimes it would grow nice and compact and other times it would grow lanky with long internodes.