[davemonkey]

Might the first be another aquatic form of Ranunculus? It has similar leaves, but I guess not much else in comparison. I've searched a few plant sites and have not seen anything similar.

-Dave

Here's a link to another possible aquatic species, Ranunculus flabellaris :
http://plants.usda.gov/java/profile?symbol=RAFL

 

[davemonkey]

Wow, that certainly looks like Drinda's plant. Bacopa sp. Guinea. Did the person in DFWAPC that you got it from remember anyhting about it?

Also, I think the second plant can very well be the 'Porto Velho'. I saw a tank on another site that had a similar pic (size, etc...) and they said it was just young growth of 'Porto Velho' .

-Dave