Jelaskan Mastacembelus ellipsifer Boulenger, 1899 dari Mastacembelus

Mastacembelus erythrotaenia Bleeker, 1850 (Fire eel)

Mastacembelus favus Hora, 1924 (Tire track eel)

Mastacembelus frenatus Boulenger, 1901 (Longtail spiny eel)

Mastacembelus kakrimensis Vreven & Teugels, 2005

Mastacembelus latens T. R. Roberts & D. J. Stewart, 1976

Mastacembelus mastacembelus (J. Banks & Solander, 1794)

Mastacembelus notophthalmus T. R. Roberts, 1989

Mastacembelus platysoma Poll & Matthes, 1962

Mastacembelus reygeli Vreven & Snoeks, 2009

Mastacembelus robertsi (Vreven & Teugels, 1996)

Mastacembelus sanagali Thys van den Audenaerde, 1972

Mastacembelus seiteri Thys van den Audenaerde, 1972

Mastacembelus sexdecimspinus (T. R. Roberts & Travers, 1986)

Mastacembelus shiranus Günther, 1896 (Malawi spiny eel)

Mastacembelus simbi Vreven & Stiassny, 2009

Mastacembelus strigiventus W. Zhou & L. P. Yang, 2011

Mastacembelus thacbaensis V. H. Nguyễn & H. D. Nguyễn, 2005 – junior synonym of M. undulatus according to Catalog of Fishes