Class PISCES 

 Subclass ELASMOBRANCHII 



Order EuSELACHii: Sharks 



Family CARCHARINIDAE 



Genus SCOLIODON Muller and Henle 



Scoliodon Muixer and Henle, Sitz. Ber. Akad. Wiss. Berlin, 1837, p. 114. (Type, 

 Carcharias (Scoliodon) laticaudus Muller and Henle.) 



SCOLIODON WALBEEHMII (Blecker) 



Carcharias {Scoliodon) ivalbeehmii Bleeker 1856 (144), p. (348) 353 (Rio, 



Bintang Island). 

 Scoliodon walbeehmi Hoka, 1924a, p. 464 (Tale Sap). 



Of the numerous species of sharks of various families and genera 

 inhabiting the coasts of Thailand, only one, the present form, has 

 been definitely identified as regularly entering fresh water. This small 

 shark, of wide range (China to India), does not appear to have been 

 recognized or recorded as elsewhere frequenting fresh water. 



Reaching a length of 60 to 75 cm. in local waters, this fish is fairly 

 common in the inner lake of the Tale Sap and in the Patalung River, 

 which flows into it. 



According to the local fishermen, this shark takes a rather heavy 

 toll of young turtles {Batagur taska) from the nesting colony in the 

 Tale Sap near Pak Bhayoon. 



Another shark of this genus, Scoliodon sarrakowah (Cuvier), and 

 Hemiscylliy/ni griseum (Miiller and Henle) belonging in the family 

 Hemiscylliidae, are listed by Fowler (1935a, 1937) from Bangkok, 

 but these records are believed to be from market specimens from the 

 Gulf of Siam. 



The vernacular Thai name for this and other sharks is pla chalam. 



Order Batoidei : Sawfishes, Rays, and Skates 



Family PRISTIDAE: Sawfishes 



The sawfishes are common in the shore waters, estuaries, and lower 

 courses of rivers and are caught in considerable numbers in nets and 

 on hooks. They have economic importance in that the flesh meets with 



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