The Bicolor Blenny, Ecsenius bicolor, has a bisecting color pattern with the front half being a blue to pale brown color and the back half is orange/yellow. They are hardy and can be housed with other peaceful fish in a reef tank setting, but may become territorial towards other blennies, gobies or dartfish in smaller tanks.
 
Care Level:
Easy
Temperament:
Peaceful
Diet:
Herbivore
Reef Safe:
Yes
Minimum Tank Size:
30 gallons
Max Size:
4 inches