Aquaria•Ecophysiology•Citizen Science

I am an aquarium hobbyist turned ichthyology researcher - what began as a childhood pastime in aquaria evolved into an academic career in fisheries science.

My research scope extends beyond the fishbowl! Companion animals, like fishes, represent accessible models for understanding the physiological responses of organisms to their environment. My interest in these relationships precipitated an applied research scope in invasion ecology; I seek to understand the historical, social, and ecophysiological factors driving the success of aquatic invasive species in Canada, with an emphasis on pet-traded animals. 

Current project: The winter ecology of invasive Goldfish (Carassius auratus) and invasion potential under climate change

Meet Me!
Growing up in Halifax, Nova Scotia, I was enthralled by nature from a young age. Not until my parents bought me a fish tank - rather than the pet dog I had always dreamed of - did my facination with coastal and underwater world truly cement. 

Since, I've completed my BSc in Biology at Dalhousie University, and MSc at the University of Toronto, with a focus in freshwater conservation and fisheries science. 

When I am not in the field, or knee-deep in research, you can find me snapping photos of local wildlife on citizen science platforms, or drawing to my heart's content! 

Developmental plasticity in response to thermal variability facilitates enduring physiological tolerance

Developmental plasticity in response to thermal variability facilitates enduring physiological tolerance

08/01/2026

Massey, M.D., Fredericks, M.K., Hutchings, J.A., Dalziel, A.C. (2025). Developmental plasticity in response to thermal variability facilitates enduring physiological tolerance. In-Press, Proceedings of the Royal Society B: Biological Sciences. RSTB-2025-0063.

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Differential reproductive plasticity under thermal variability in a freshwater fish (Danio rerio)

Differential reproductive plasticity under thermal variability in a freshwater fish (Danio rerio)

07/09/2022

Massey, M.D., Fredericks, M.K., Malloy, D., Arif, S., Hutchings, J.A. (2022). Differential reproductive plasticity under thermal variability in a freshwater fish (Danio rerio). Proceedings of the Royal Society B: Biological Sciences. 289(1982): 20220751.

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Overwintering Survival of an Invasive Freshwater Fish (Carassius auratus): Individual and Interactive Effects of Temperature and Resource Availability in a Warming Climate

Overwintering Survival of an Invasive Freshwater Fish (Carassius auratus): Individual and Interactive Effects of Temperature and Resource Availability in a Warming Climate

10/06/2026

Fredericks, M.K., Massey, M.D., Mandrak, N.E.(2026). Overwintering survival of an invasive freshwater fish (Carassius auratus): Individual and interactive effects of temperature and resource availability in a warming climate. In preparation for Conservation Physiology.

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A survey of Canadian aquarium owners: Trends and aquatic invasion risk posed by the aquarium trade

A survey of Canadian aquarium owners: Trends and aquatic invasion risk posed by the aquarium trade

01/05/2026

Massey, M.D., Fredericks, M.K., Mandrak, N.E., (2026). A survey of Canadian aquarium owners: Trends and aquatic invasion risk posed by the aquarium trade. In Preparation for Biological Invasions.

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Fences in the Sand: Scientists exploring impacts of horses’ grazing on ‘hidden treasures’ of Sable Island

Fences in the Sand: Scientists exploring impacts of horses’ grazing on ‘hidden treasures’ of Sable Island

15/02/2024

A project on Sable Island is giving researchers a closer look at how the grazing of its iconic horses is affecting the island’s ecosystem, including the island’s tiniest of creatures.

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