Why Are Chromis' Cheap?

[spoon]

I was just wondering, why Chromis' are so cheap?
I am pretty sure they have NOTHING beneficial to add to an ecosystem, but is that it?

 

[druluv]

in addition maybe they are very easy to find and catch

 

[h2oengr]

Spoon, would you expect then that if something does have benefit that it is expensive?
I have 3 that school - that's kinda neat. They are boring though!