We believe the Aquatics are the original form of the Reticulan sub-class. They resemble them in many ways, including internal organs.
As they are less modified than their Reticulan counterparts, they retain more of their individual mental capacity. There is no evidence that they are controlled by extra sensory means, which may indicate more complex allegiances. Their bio-mechanics technology seems to be a superior version of previously encountered Reticulan devices.
Primary analysis indicates they make for great sushi.