5152 Macrognathus aculeatus (Bloch, 1786) Mastacembelidae Spiny eels Synbranchiformes Teleostei Lesser spiny eel Asia: Thailand, Malay Peninsula, Borneo and Indonesia. Reported from Bangladesh (Ref. 1479) and Nepal (Ref. 9496); India (Ref. 43634); Viet Nam (Ref. 89724). UBC 590532 13 N 103 E Macrognathus aculeatus UBC 590574 13 N 99 E Macrognathus aculeatus UBC 660038 23 N 90 E Macrognathus aculeatus UBC 660046 23 N 90 E Macrognathus aculeatus AMNH 20630 Macrognathus aculeatus AMNH 55639 Macrognathus aculeatus AMNH 55764 Macrognathus aculeatus AMNH 79347 Mastacembelus aculeatus AMNH 79361 Mastacembelus aculeatus P A8023.0009A8023.0010 Macrognathus aculeatus P A3009.0003A3009.0008 Macrognathus aculeatus AMNH 97654 1971 Macrognathus aculeatus