need clam id and some help

[ozadars]

Hi there,
I bought this 3" clam yesterday. I think its derasa but hope its crocea cause its in my 20gal nano tank.
Here is a picture;

ý cant find live phyto over here. Can i feed him with liquid food thats made for filter feeders?

Also, you know there are two holes on the mantle. The one is tube looking you can see from the picture and the other one is at the other side but that one is really wide. Does this mean something?

Thanks

 

[kfisc]

Very good looking clam- I've never seen/heard of a derasa with that coloration- the shell also seems too fluted (too many ridges). I'm guessing it's a T. Maxima....but do juvenile Derasa feature a different color pattern??

 

[hwynboy]

Its a Crocea.

 

[ozadars]

Crocea? Sounds really good, i was really worried about it getting too big for my tank.
I have 250W MH and 40W actinics over my 19gal reef tank, hope this will be enough.
So will feeding my tank with Marine Snow or other similar liquid foods will be enough for this 3" crocea?