Macrognathus keithi ( Herre, 1940 )

Ikhwanuddin, Mat Esa Mohd, Amal, Mohammad Noor Azmai, Aziz, Azizul, Sepet, Johari, Talib, Abdullah, Ismail, Muhammad Faiz & Hashim, Nor Rasidah, 2017, Inventory of fishes in the upper Pelus River (Perak river basin, Perak, Malaysia), Check List 13 (4), pp. 315-325 : 323

Macrognathus keithi ( Herre, 1940)

Mastacembelus keithi Herre 1940: 24 .

Material examined. Table 1; Figure 4h.

Macrognathus keithi was identified by having 25–29 dorsal-fin spines; 52–61 dorsal-fin soft rays; 23–27 pec- toral-fin soft rays; 3 anal-fin spines; 52–61 anal-fin soft rays; 18–25 scale rows between lateral line and base of the first soft dorsal fin and 2 preopercular spines ( Inger and Chin 1962). Macrognathus are distributed through- out most of South and Southeast Asia, and feed on small aquatic insect larvae as well as oligochaetes. This species, as well as innumerous congeners are popular to aquacul- ture, such as the lesser spiny eel, M. aculeatus and the spot finned spiny eel, M. siamensis ( Roberts 1980) .