Orthox are small herbivorian sea creatures. Their length is about the distance from your elbow to your fingertips (hand stretched). They have a sturdy sack on their head wich contains their brain (mass). They have squid-like eyes and they eat through sucking up floating/loose plants.
The animals originate from an unknown planet, some people say they originate from here while the other says it came from there...anyways, it is widely spread throughout the galaxy due to travelling merchants of all kinds.