Big headed...lightweight, pacific and herbivores, these GMO´s are great for slaughter. They are fragile and uses their gas-bladder in their heads to helps them stand up like using a helium balloon to raise. That's a good thing, you can extract their gas bladders to recover some useful gases...like acetylene, hydrogen, acidgas and others. They are also good bone producers, you may want that for phosphate. Even if you don't want to slaughter them, you can still collect manure, they aren't the best manure producers, but may worth in your setup. It´s a mid game creature, you may unlock it during green science or blue.