Western Iran barb species are scientifically, environmentally, and economically important. Some of them are the largest riverine freshwater species, which will grow in size and weight to 170 cm, and 120 kg respectively. There is little information on taxonomy or environmental status of these species Luciobarbus barbulus is one of the important large species. During the resent year since 2013, in order to find the new record of large barb species, sampling program carried out in western Iran,. Luciobarbus barbulus briefly described by Heckel (1849) but during the time, have been synonymized with other related species or vice versa, other similar species miss-identically have been known as this species. Also the synonymy of Luciobarbus barbulus with L. pectoralis remains uncertain. The possible syntypes of L. barbulus in Vienna Museum (NMW 53957 and NMW 6596) are in too poor condition to be of any value, being mostly bones, and are dried, and. The fleshy lip of NMW 6596, (measures 119.3 mm standard length) fold of the original description could not be discerned, teeth are missing and the dorsal fin is broken off short. In 1997 this was the only syntype recognized. The catalog in Vienna lists only 1 fish, while Heckel's description refers to several fishes!. So designing of Lecotype and re-description of L. barbulus is essential. In this paper the details of description and differences between these species are given.

Western Iran barb species are scientifically, environmentally, and economically important. Some of them are the largest riverine freshwater species, which will grow in size and weight to 170 cm, and 120 kg respectively. Although these species are vulnerable, there is little information on taxonomy or environmental status of the species Luciobarbus barbulus is one of the important large species. In order to find the new record on the present status of large barb species sampling program carried out in western Iran, during the resent year since 2013 to now. This species overlaps in distinction with L. mystaceus, L scheich, and other similar species. In this study re-description of L.barbulus is given. This species differs from L. mystaceus in having thick and very wide fleshy lip, inferior mouth and slightly shorter head. In Luciobarbus barbulus head is more inferior. The details of differences between these species are given. This species is one of stable growing fish without dimorphism, retain its shape from a fingerling species to a giant fish.

To date, 41 species of Gyrodactylus have been described from Africa. However, none of these have been reported in Morocco. After identifying and examining 738 cyprinid host specimens, 26 specimens belonging to Gyrodactylus were found to parasitize the gills of nine species of Luciobarbus, Carasobarbus, and Pterocapoeta. The current study describes in detail 12 specimens of Gyrodactylus isolated from the gills of Luciobarbus pallaryi (Pellegrin, 1919) and Luciobarbus ksibi (Boulenger, 1905). Based on morphoanatomical observations, the characterization of the specimens collected suggests a species of Gyrodactylus new to science, described here as Gyrodactylus nyingiae n. sp. The new species is different from previously described gyrodactylids infecting African cyprinid hosts because it has a longer hamulus total length, a longer hamulus root, a downward projecting toe, a trapezium shaped ventral bar membrane with slightly striated median portion and small rounded anterolateral processes. This study brings the total number of Gyrodactylus spp. found in African cyprinids to four.