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The article describes a new species of nematode Rhabdochona pakistanica from the stomach of a fish, Cyprinion watsoni, at river Bolan, Balochistan, Pakistan. It is characterized by thin and smooth cuticle, rounded anterior, roughly pentagonal oral aperture, funnel-shaped prostom and very long esophagus. It has post-equatorial vulva, beak-like vulval lips and strongly muscular vagina. The species is easily distinguished by its trophy-shaped smaller spicule. It is also different from other nematodes because its deirids are very close to the posterior extremity of muscular esophagus.

The article presents a study that describes the R. (F.) gubernaculus, a new specie of nematode genus Rhabdochona Railliet found from the stomach of cyprinid fish Cyprinon watsoni in River Bolan, Balochistan in Pakistan. It mentions that the R. (F.) gubernaculus belongs to the subgenous Filochona Saidov. It states that the species have ten prostomal teeth, eight pairs of preanal, one adanal, and six postanal caudal papillae. The deirids in male species are located in second half of muscular esophagus while posterior to the middle of muscular esophagus in females. The females are also found to be larger than males and that the female species have unifilamented eggs.