Metzia lineata (Pellegrin)

Hui, Tan Heok, Peng, Kelvin Lim Kok, Huan, Liew Jia, Wei, Low Bi, Hing, Rayson Lim Bock, Beng, Jeffrey Kwik Teik & Yeo, Darren C. J., 2020, The non-native freshwater fishes of Singapore: an annotated compilation, Raffles Bulletin of Zoology 68, pp. 150-195 : 161

Metzia lineata (Pellegrin) [Extirpated]

( Fig. 31 . EAs[SPC])

References. Regan, 1913 (described as Rasborichthys altior ); Weber & de Beaufort, 1916 (as Rasborichthys altior ); Tweedie, 1936 (as Rasborichthys altior ); Herre & Myers, 1937 (as Rasborichthys altior ); Blythe, 1951 (as Rasborichthys altior ); Johnson, 1964 (as Rasborichthys altior ); Alfred, 1966a (as Rasborichthys altior ); Bănărescu, 1971 (as Rasborinus lineatus ); Johnson, 1973a (as Rasborichthys altior ); Lim & Ng, 1990 (as Rasborinus lineatus , as early as late 1800s or early 1900s); Munro, 1990 (as Rasborinus lineatus ); Ng et al., 1993 (as Rasborinus lineatus takakii ); Ng & Lim, 1997a (as Rasborinus lineatus takakii ); Ng & Lim, 1997b (as Rasborinus lineatus ); Tan HH et al., 2010; Tan HTW et al., 2010 (as Rasborinus lineatus takakii ); Baker & Lim, 2008, 2012.

Distribution. Probably extirpated in Singapore as there have been no recent records ( Ng & Lim, 1997a, 1997b); previously recorded from Singapore Botanic Gardens ( Tweedie, 1936; Alfred, 1966a); Serangoon area ( Tweedie, 1936; Alfred, 1966a); Mandai Road area ( Herre & Myers, 1937); MacRitchie Reservoir ( Alfred, 1966a); Sungei Seletar ( Alfred, 1966a); Sungei Whampoe ( Alfred, 1966a); Kallang River ( Alfred, 1966a; Tan HTW et al., 2010); Bukit Timah campus (Alfred ER, pers. comm., 2007); Lower Peirce Reservoir ( Ng & Lim, 1997a); Upper Seletar Reservoir ( Ng & Lim, 1997a).

Remarks. Regan (1913) described this fish species on the presumption that it was endemic to Singapore. Weber & de Beaufort (1916) followed suit in regarding the species as native and endemic, as did subsequent workers ( Tweedie, 1936; Herre & Myers, 1937; Alfred, 1966a; Johnson, 1973a). The taxonomy was only resolved by Bănărescu in 1971, and its endemic/native status debunked. This species is now understood to be an accidental import, along with fingerlings of food fish species, imported from Hong Kong and southern China ( Lim & Ng, 1990).

Figures

Fig. 31. Metzia lineata, 41.9 mm SL, Vietnam.