Fish tanks, for example, moved away from highly corrosive liquid (7)
I believe the answer is:
aquaria
'fish tanks' is the definition.
(plural of aquarium)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for aquaria that I've seen before include "Tanks or buildings for fish" , "display tanks" , "Transparent fish tanks" .)