Id This Plant?

Picked up a few plants from a craigslist posting; person had no idea what any of her plants were.
 
This photo, the red leaved one on the left?

 
I'll have to get photos of the other 2.  She works at PetCo, gets all her aquarium stuff from there at a discount . . . so not likely to be something rare and unusual.
 
 

 
So far I have been given 3 possibilities:
red ludwigia
telanthera
ammania gracilis

hmm this is a hard one it looks like red ludwigia but should it be more red but my money would be on that one tbh may need more light to bring out its true colour

True. If it is indeed ludwigia then it's in bad condition.

Renicki? Or however you spell it? Its definitely showing signs of deficiency. Usually red plants need High Light, Ferts, CO2, Iron. TLC.