id for clams and urchin please

[scott764]

Hi, Can someone please id the clams and the urchin at my page http/www.phunk-e.com.au/fish.html . Id like to find out more about them...what they eat...what I need to give them ie.how much light, do they need minerals or something added to water???
thanks,
Scott

 

[Navarre]

Looks to me like yor clams are actually Bi valves. Similar to clams bu tsmaller and less colourful.They also do not need lighting as they gain their nutrition from the water colum.

The urchin is unidentifiable im afraid. The picture simply isnt clear enough