Timorichthys differs from all other bythitid genera in having the anus positioned midway between the snout tip and the anal-fin origin.
Diagnostic characters: Anus positioned about midway between snout and origin of anal ﬁn; body strongly compressed, without scales; head small, mouth almost vertical with small teeth in jaws, on vomer and palatines; dorsal-ﬁn rays 74–80; anal-ﬁn rays 46–52; pectoral-ﬁn rays 10–12; precaudal vertebrae 16–22; total vertebrae 52–62; ﬁrst gill arch with 6–14 long rakers; and otolith with small centrally placed sulcus.
Timorichthys also has dorsal and anal fins joined to the caudal fin, a single pelvic-fin ray and the copulary organ as part of the fleshy genital hood with the penis present as a small soft papilla without pseudoclaspers that further places it in the subfamily Bythitinae.
The genus contains two species, with Timorichthys disjunctus, known only from a single male specimen collected at a depth of 392 m in the Timor Sea off northwestern Australia.
Nielsen, J.G., Okamoto, M. & Schwarzhans, W. 2013. A new species of Timorichthys (Ophidiiformes: Bythitidae) from the East China Sea. Ichthyological Research DOI 10.1007/s10228-013-0341-3
Nielsen, J. & W. Schwarzhans. 2011. A new genus and species of Bythitidae (Teleostei: Ophidiiformes) from northwestern Australia. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 27: 143-146.