Crossword Genius

Fish tanks, for example, moved away from highly corrosive liquid (7)

Ross

I believe the answer is:

aquaria

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'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" .)

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