Anyone know what plants these are?

Hi, I recently bought a bunch of plants, but they were labelled as 'assorted' and the staff at the store didn't know what they were. Does anyone know what the red plant (pictured here) and the bright green ones next to it is? Thanks

 

The green one is hygrophilia

 

Your purple/red plant reminds me of a ludwigia...maybe Ludwigia natans 'Super Red'. But, I'm not totally sure.

 

The green one is hygrophilia

Is it the giant hygro do you think? It didn't look exactly right at first because it's kind of growing in sections - there's a big gap of stem with no leaves then suddenly there's really big leaves and lots of new leaves coming from the stem and then a gap again.
What about this tall, grasslike one? It has slowly been turning brown...

 

I think your tall grass-like plant is some sort of terrestrial ornamental grass...maybe something like Miscanthus sinensis 'Cabaret'. If so, it is not aquatic and should be taken out of your tank.

 

Ok thank you. Wow, I am not very happy that two out of the three types I bought aren't suitable for the aquarium. The other two that I first posted (the green and red), they're definitely fish tank/aquatic plants right?

 

Ok thank you. Wow, I am not very happy that two out of the three types I bought aren't suitable for the aquarium. The other two that I first posted (the green and red), they're definitely fish tank/aquatic plants right?

If the first two are a hygrophila and a ludwigia (which I think they are), they are very likely to be aquatic. The hygrophila will likely prove to be the easier to grow.

 

Ok thank you. Wow, I am not very happy that two out of the three types I bought aren't suitable for the aquarium. The other two that I first posted (the green and red), they're definitely fish tank/aquatic plants right?

Yes. Hygrophilia is very easy to care for and to propagate. If it is dropping old growth then just make sure your lighting and fertilizer is adequate. It requires no CO2 and will grow over an inch a week without it. If it looks like it’s growing to top-heavy for you then you can prune it to grow more bushy.