Tolong jelaskan mengenai 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