April resorts to desperate measures in scenes which soon air in Australia, deciding to take medication to help her stay awake as she puts in long hours of study for her HSC exams.
The episodes in question see April steal Sid Walker's (Robert Mammone) script pad to write herself a prescription, disregarding the seriousness of her actions.
Fish told TV Week of the storyline: "April is one of those people who just puts so much pressure on herself. The fact it's illegal doesn't cross her mind - she just needs something to help her make it through the exams."
The actress also promised that April's decision will have long-lasting consequences.
"It's something that will affect her for the rest of her life, taking these drugs," Fish explained.
Home and Away airs these scenes next week in Australia and in the winter on Channel 5 in the UK.
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Watch the latest Home and Away promo from Australia below: