ID goby

  • We are currently upgrading MFK. thanks! -neo
you can also supplement them with repashy soilent or super green.

As for the rocks, add a pinch of food and lots of light. Make sure to either change the water or add a powerhead.
 
they are aufwuchs grazers, which is algae and the microcrustaceans that live in the algae on rocks in fast moving streams.
 
MonsterFishKeepers.com