The Temmorians were a species that did not have very good eyesight and would have to peer close at things to see. Their possible family groupings were called pods.

Miles O'Brien discovered a pod of Temmorians and their babies in the maintenance tunnel leading to the fusion reactor on Deep Space 9 waiting out a plasma storm. O'Brien accidentally bumped into some and stepped on some on his way to close the distribution amplifier, and he was worried that he might have killed some. (DS9 novel: The Tempest)

It is unknown what their size is, but from the way that O'Brien was worried about killing some just by stepping on them, either they were very small or have very delicate skin. It is similarly uncertain if those he thought he was killing were the babies or the adults, or both.
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