. The Canadian field-naturalist. 1960 Notes 177 Sand-hiding Behavior in Young White Hake While skin diving off a sand beach at Prince Edward Island National Park, , on 16 and 17 of July 1959, I ob- served a peculiar habit of young white hake, Urophycis tenuis (iMitchill). The hake lay on their sides in the sand with their heads projecting (Figure 1). The. Figure 1. White liake huritd in sind head was turned slightly towards the vertical and was not completely on its side. When closely approached the hake withdrew from the sand and fled. About six specimens, three to four inches long, wer
. The Canadian field-naturalist. 1960 Notes 177 Sand-hiding Behavior in Young White Hake While skin diving off a sand beach at Prince Edward Island National Park, , on 16 and 17 of July 1959, I ob- served a peculiar habit of young white hake, Urophycis tenuis (iMitchill). The hake lay on their sides in the sand with their heads projecting (Figure 1). The. Figure 1. White liake huritd in sind head was turned slightly towards the vertical and was not completely on its side. When closely approached the hake withdrew from the sand and fled. About six specimens, three to four inches long, were observed to behave in this manner. The water was about three feet deep. As the water was clear, the characteristics of the fish could be ascertained and even the barbel could be seen. Positive identi- fication was made by seining and examining specimens. This peculiar behavior not only hides the hake from its predators but also con- ceals it from its prev. Similar behavior is recorded for the families Labridae and Serranidae and is thought to have lead to the evolution of the assymetrical Pleuro- nectiformes (Norman, J. R. A systematic monograph of the flatfishes. Vol. 1. British Museum Natural History, 1934, p. 9). Don E. McAllister National Museum of Canada Ottawa, Ontario 14 December 1959 The Twospine Stickleback Gasterosteiis wheatlandi new to the Canadian Fresh-water Fish Fauna A specimen of the twospine stickleback, Gasterosteus wheatlandi Putnam, was caught in fresh water inside the mouth of Jacquet River, Restigouche County, New Brunswick. Although the species is known from marine and brackish waters from southern Newfoundland to Massachusetts it has not been reported from fresh water. While collecting for the National Museum of Canada I set a minnow trap in a pool of Jaquet River above the beach where it enters Chaleur Bay. The fresh- ness of the water was verified by taste. This set, overnight from July 12 to 13, yielded a ripe male Gasterosteus wheat- landi, now ca
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