Hemibagrus planiceps

Ng, Heok Hee & Kottelat, Maurice, 2013, Revision Of The Asian Catfish Genus Hemibagrus Bleeker, 1862 (Teleostei: Siluriformes: Bagridae), Raffles Bulletin of Zoology 61 (1), pp. 205-291 : 249

HEMIBAGRUS PLANICEPS SPECIES GROUP

Remarks. — Members of the H. planiceps species group are found in the upper reaches of large rivers, where the water is usually clear and fast-flowing (generally with a sandy or rocky bottom); they have not usually been found syntopically with members of the H. nemurus species group, which are common in the slower-flowing middle and lower reaches of rivers, but almost never occur in the upper reaches.

No Hemibagrus belonging to this group has been found in Indochina (Ng & Rainboth, 1999; MK, pers. obs.). Although Ng & Rainboth (1999) reported the presence of an elongate Hemibagrus from the Mekong River at That Phanom in Thailand resembling H. planiceps based on a photograph of a specimen, the specimen is actually that of H. wyckioides lacking the characteristic red colour of the fins (C. Vidthayanon, pers. comm.). Previous records of H. planiceps (as Mystus planiceps ) by Fowler (1935: 104, Fig. 30 ) have turned out to be misidentifications of Mystus aff. gulio .

Figures

Fig. 30. Map showing collection localities of Hemibagrus olyroides specimens examined in this study.