Barbara L. Langille

1 INTRODUCTION Cleaner fish, such as wrasses and the lumpfish (Cyclopterus lumpus Linnaeus, 1758) have been utilized as sea lice (Lepeoptherius salmonis and Caligus elongates) control measures in salmon aquaculture, in replacement of chemical therapeutants (Aaen et al., 2015; Lees et al., 2008; Riley et al., 2017).

INTRODUCTION Australia is home to the most diverse assemblage of stygobiotic (obligate subterranean aquatic) diving beetles in the world (Austin et al. 2023; Balke et al. 2004). At present, there are more than 100 species described, the majority of which belong to the genera Limbodessus Guignot, 1939 and Paroster Sharp, 1882, with several species also belonging to Neobidessodes Hendrich & Balke 2009, and Exocelina Broun, 1886 (Balke et al.