Plant identification help

[Bottomfeeder88]

I found this in a great mom and pop pet shop (90% aquatic stock and goods) during my annual trip to Houston. Unfortunately, the people i spoke to either didn't know the name or didn't speak English.
I'm usually good at ID'ing plants but I'm a bit stumped. Any help is appreciated!

 

[Bottomfeeder88]

The leaves are long, detailed and slender.reddish-brown to olive colored. Very fast grower, I bought it ragged and it grew almost two inches in 8 days.

 

[Peyton]

My first guess would be hygrophila polysperma. Possibly H polysperma 'ceylon'.

 

[Bottomfeeder88]

Yeah came down to Ceylon or sp. tiger.