Yet Another Plant Identification...ludwigia Or Hygrophila?

[Elrohirthehasty]

Hello, what do you think this is?  I was guessing some sort of ludwigia or hygrophila, but I could be (and probably am) completely wrong.  I searched a bit on the internet, but didn't find anything super close looking within 20 minutes, so I gave up and did the lazy thing and posted here:
 

 

 
Thanks!

 

[KirkyArcher]

Looks like Hygrophila polysperma, I have some in my 40 litre Qubie, grows like wildfire. 

 

[DrRob]

Aye, was just typing something very similar.

 

[mike455555]

+1 for hygro

 

[Elrohirthehasty]

Thanks, all.  Nice to know I was in the ballpark.