Yes, they are one of the nicest barb come shark available in the hobby.
They have an almost neon brightpink/red streak running from their noses to half their body length, grow to a max 6"...
Potential problems in a planted tank:
They need room, these are fast flowing river species from mountian streams in S.India. I would say dont keep them in less than 4ft long tanks.
Oxygen requirement is relatively high: cooler water mountain stream habitats are high O2 environments. If you inject CO2 be cautious and run an air pump overnight when plants and animals are net producing CO2.
They dont travel well, especially the larger 3" plus ones. Many reports of fish ending up dead when people get them home. Ive never had this problem though.
One thing I have found is that the smaller ones available seem to have high mortality. That is my personal experiance. I get 1-2" fish and perhaps after 6months to a year they die without any obvious external issues. Typical scenario is stopping eating, swimming away from the group and eventually dieing.
They are impressive when full grown, I currently have four full grown adults, down from 10. Ideally you should keep them in small groups of around six fish.
While I really like these fish, I dont think I will purchase anymore. The remaining denisonis I have were largish when I bought them and that was some 3 years ago. Any that I have added have ended up passing away prematurely.
