Can you help me indentify a few items

[Riceman]

Can anyone tell me wat this is... thank u

a) this one is my farovite one but never knew wat it is (got it in January 2011)


b) the following I got at the monster frag swap meet ( my first one) but lost the names and cant look them up to ensure I got proper spacing (got them in April 2011 and they are doing good)



and





c) and the last one I got it when I got my rock for my tank (got it in March 2011). It was on already growning on my work.