attu, Silurus Bloch [M. E.] & Schneider [J. G.] 1801:378, Pl. 75 [M. E. Blochii, Systema Ichthyologiae; ref. 471] Malabar, India. Holotype (unique): ZMB 8783 (dry, lost). Type catalog: Paepke 1999:139 [ref. 24282], Ferraris 2007:380 [ref. 29155] See also Silurus athu as second original spelling; first reviser Bleeker 1858:263 [ref. 365] selected attu. •Valid as Wallago attu (Bloch & Schneider 1801) -- (Shrestha 1978:38 [ref. 15970], Coad 1981:16 [ref. 22348], Burgess 1989:86 [ref. 12860], Ataur Rahman 1989:165 [ref. 24860], Pethiyagoda 1991:139 [ref. 20075], Talwar & Jhingran 1991:590 [ref. 20764], Indra 1991:241 [ref. 24005], Kottelat et al. 1993:71 [ref. 23448], Sen 1995:566 [ref. 23778], Zhu 1995:143 [ref. 25213], Rainboth 1996:151 [ref. 22772], Dai in Chu et al. 1999:91 [ref. 24534], Rema Devi & Raghunathan 1999:157 [ref. 24759], Menon 1999:214 [ref. 24904], Freyhof et al. 2000:96 [ref. 25184], Rafique 2000:326 [ref. 25220], Mirza 2000:356 [ref. 25207], Raju Thomas et al. 2000:444 [ref. 25319], Karmakar 2000:32 [ref. 25662], Kottelat 2001:128 [ref. 25780], Raju Thomas et al. 2002:50 [ref. 26359], Rafique et al. 2003:98 [ref. 27173], Mirza 2003:20 [ref. 27265], Yadav 2003:20 [ref. 27711], Ataur Rahman 2003:185 [ref. 31338], Ng 2004:92 [ref. 27505], Jayaram 2006:112 [ref. 28762], Ferraris 2007:380 [ref. 29155], Shrestha 2008:154 [ref. 29923], Patra 2011:1612 [ref. 31232], Kottelat 2013:239 [ref. 32989], Roberts 2014:36 [ref. 33394], Suresh et al. 2018:125 [ref. 36495], Fu et al. 2021:9571 [ref. 39347], Taki et al. 2021:258 [ref. 39830], Kosygin et al. 2022:664 [ref. 40736], Çiçek et al. 2023:41 [ref. 40326], Gupta et al. 2024:101 [ref. 41453]). Current status: Valid as Wallago attu (Bloch & Schneider 1801). Siluridae. Distribution: South Asia and Southeast Asia: Afghanistan, Pakistan, India, Sri Lanka, Nepal, Bangladesh, Myanmar, Yunnan (China), Thailand, Java (Indonesia). IUCN (2019): Vulnerable. Habitat: freshwater.