This final picture has a longer story. One of the objectives was to transport some fish back to the lab outside of Montreal. For this we trapped the fish and kept them alive in plastic bags (see picture above). The bags were placed in wooden crates and surrounded with ice, also in bags. As the voyage south proceeded, at each stop, we would open the bags and bubble more oxygen into the water so the fish had something to breathe. In Edmonton, we fell asleep during the all night layover in the terminal and were rudely awakened at dawn by the scream of an outraged mother whose young child had rushed over to run, splash and finally fall in a puddle of melt water which spread out after leaking out of one of our fish boxes while we slept!
Most of the fish made it to Montreal safely and lived quite happily for some time afterwards at the lab. I worked there during the winter counting rings on the oolilith bones to determine ages of the fish we'd caught, but that's another story.