from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A perchlike food fish (Arripis georgianus) of Australia and New Zealand.
- n. A small fish (Trachichthys australis) with rough scales, found in shallow waters along the southeast coast of Australia.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The orange roughy, Hoplostethus atlanticus.
- n. Any of several marine fish of the related genus Trachichthys, which have rough and spiny scales.
Probably from rough.(American Heritage® Dictionary of the English Language, Fourth Edition)