
Over the holidays, I have been devouring "Bottomfeeder: How to Eat Ethically in a World of Vanishing Seafood" by Taras Grescoe - an author from Montreal - who writes about choices we can make in the seafood we eat. As a piscivore myself (a person who limits their flesh-eating to fish only), I am very concerned about the health implications and the environmental impacts of having my primary protein source come out of our oceans. To the annoyance of my family I'm sure, I've been so amazed by the information in this book that I've been reading parts of it aloud for the last couple of weeks.
From the dangers of farming carnivorous species (chemically-treated and antibiotic-laden salmon and shrimp farms are full of disease and destroying wild species), to the destructive fishing practices that are used to bring in certain other species (using dynamite and cyanide fishing for reef fish like grouper and wrasse, or bottom-trawling for monkfish), there are certain fish that should be avoided both for health reasons and in order to protect ocean ecosystems. A lot of the book is simply horrifying and has turned me off of a lot of seafood that I have consumed on a regular basis before reading this book. Nevertheless, the overall message of the book is very positive and Grescoe gives accolades to sustainable fishing practices around the world and advice on better species choices. His writing throughout is captivating: while incredibly informative, each chapter represents a new area in the world and reads more like a foodies' travel diary with humorous anecdotes and personal stories of people working in various fishing industries.
An interesting resource that is mentioned in this book is the Canadian website "SeaChoice: healthy choices, healthy oceans" that includes a wallet-card pointing out "red", "yellow" and "green" fish choices. "Red" fish should always be avoided due to environmental concerns or harmful levels of toxins. "Yellow" fish have some concerns and "green" fish are the best choices. Each list shows the ocean where the fish comes from and the method of fishing that is used. For example, shrimp and prawns show up in each category, "green" for trap-caught sidestripe and spot species from BC, "yellow" for trawled shrimp from Mexico or the Atlantic and "red" for international tiger and white shrimp caught or farmed by any method.
* image from http://www.tarasgrescoe.com

