Growth is continuous (Steel 2009) and is dependent on periodic molting (refs)
This species has been proposed to be great to study evolutionary changes of segment identity and patterning (Vick and Blum ; Mojaddidi et al. 2018).
Like other isopods, molts in two phases (i.e. biphasic molting) by which the posterior and anterior halves of the body molt sequentially (George 1972; Unwin and Stebbing 1920; Marcus 1990; Balian et al. 2008), with an interval of time in between of approx. 24 hours in A. aquaticus; Unwin and Stebbing 1920; Marcus 1990; (Luquet and Marin 2004)).
Molting is controlled by the ecdysterone (i.e. 20-hydroxyecdysone) hormone (George 1972; Weltje L 2006; Oceanica ; Subramoniam 2000)