'aquarial' originates from New Latin/English formation, specifically the word 'aquarium', where 'aqua' meant 'water' and the suffix '-al' (from Latin/Old French) meant 'pertaining to'.

'aquarial' was formed in English by adding the adjectival suffix '-al' to 'aquarium' (from New Latin 'aquarium', itself from Latin 'aqua' meaning 'water'), creating a word meaning 'pertaining to an aquarium'.

Initially, it meant 'pertaining to an aquarium', and over time it has retained that specific meaning of relating to aquaria or aquarium displays.