Andoan mineral-fish

"Finally, after five days on the open shallow seas of Ando and three traveling with a loosely banded fishing fleet, we've made our first major catch of the trip -- three good-sized mineral-fish just shy of a meter in length each, and a half-dozen smaller "stone-fins.""

- Sissalik

Andoan mineral-fish were a swimming crustacean species native to Ando.

Biology
The mineral-fish fed off of ore veins in deep undersea caves. After taking the nutrients it needed for energy, it used leftover metals to create a thick exoskeleton with an armored carapace and a snapping beak. The mineral-rich shells were harder than plasteel and resistant to energy weapons, and were highly valuable as a result: a single meter-long organism could be worth 10,000 credits. The mineral-fish industry was a major component of the Andoan economy.