CONTENTS Page Introduction 5 Materials................... 6 The environment................. 7 Ichthyological literature of Singapore........... 9 Aquarium fishes................. io Pond culture fishes................ n Introduced species................. 12 Acknowledgements................ 13 Systematics Key to major groups of fishes............. 13 Order Ostariophysi................ 14 Suborder Cyprinoidea................ 14 Family Cyprinidae................. 14 Chela anomalura (Van Hasselt)............ 15 Rasborichthys altior Regan.............. 16 Rasbora bankanensis Bleeker............. 17 Rasbora cephalotaenia (Bleeker)............ 18 Rasbora einthovenii (Bleeker)............. 18 Rasbora elegans elegans Volz............. 18 Rasbora heteromorpha Duncker............ 19 Rasbora maculata Duncker.............. 19 Cyclocheilichthys apogon (Valenciennes).......... 20 Labiobarbus festivus (Heckel)............. 21