Gobies of the genus Glossogobius were not known from the reservoirs and waterways in the Central Catchment Nature Reserve (Ng & Lim, 1997), and this appears to be the first record. With only a dorsal view, and no specimens in the hand, the subjects could not be identified with certainty as the arrangements of papillae on the sides of the head require to be examined in detail. Possible candidates include the tank goby (Glossogobius giuris), the golden flathead goby (G. aureus) and the circumspect flathead goby (G. circumspectus), which are native to Singapore but typically inhabit the lower parts of rivers and in estuaries. Landlocked examples of these are present in estuarine reservoirs (Larson & Lim, 2005). However, the reservoirs of the Central Catchment Area have been cut off from their lower reaches since the 1960s, and it is not likely for large landlocked taxa to persist unnoticed for the past few decades. These gobies may have been deliberately introduced recently, or carried in with raw water piped over from the Tebrau River in Johor, Malaysia (see Ng & Tan, 2010: 104).

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature