FISHERY BULLETIN: VOL. 72, NO. 2 



cold winters since (Figures 2, 3, 8). This, besides 

 indicating that the Red Sea lizardfish is fairly 

 eurythermic, may also support Kosswig's ( 1972)^^ 

 suggestion of the role of the modificability of 

 species in new environments. It is quite probable 

 that the Mediterranean stock of the Red Sea 

 lizardfish today is better adapted to the local en- 

 vironmental conditions than it was 20 yr ago. 



The Red Sea lizardfish proved vigorous enough 

 to establish itself in a niche in a habitat occupied 

 by other species; it is euryecous enough to with- 

 stand fluctuations in environmental conditions; 

 and, barring an ecological disaster, it is here to 

 stay. 



ACKNOWLEDGMENTS 



The authors' thanks are extended to all col- 

 leagues who have read this paper and offered 

 many valuable comments and remarks, and par- 

 ticularly to Adam Ben-Tuvia, Eliezer Gilat, Av- 

 raham Herzberg, Oton H. Oren, and Sh'muel Pi- 

 santy. Last, but by no means least, we thank Lyka 

 Bograd-Zismann for her reading, correcting, and 

 editing efforts. Irit Brecher helped with the draw- 

 ings. 



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