I bought the Justicia brandegeeana (Red Shrimp Plant) about 2 years ago and by luck, this plant was also in the same pot. So I planted it at the Home Garden and the plant is still there but it is not performing optimally due to the low light conditions and minimal care.
This photo was taken from a pot propagated by my colleague. With the attention given to it and the high light and fertilizers given, there are many inflorescences and the colours are so vibrant.
Anyway, the 2 links attached below provides more information on the plant: