Leucos panosi Bogutskaya & Iliadou 2006
Creators: name: Bianco, Pier Giorgio
name: Ketmaier, Valerio
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Cypriniformes
Cyprinidae
Leucos
Leucos panosi

description: Leucos panosi (Bogutskaya & Iliadou, 2006)
(Fig. 2 D)
Rutilus panosi Bogutskaya & Iliadou, 2006: 283 (type localities rivers Achelos and Louros, western Greece).
Examined materials. IZA 0 416, 7, Greece, L. Trichonis; P.G. Bianco, 25 April 1987.— IZA 8766, Greece, canal emissary of L. Trichonis, P.G. Bianco, 1 May 1987.— IZA 0 417, Greece, L. Trichonis, P.G. Bianco, 10 August 1998.— IZA 85513, 28, Greece, L. Ambrakia, P.G. Bianco, 30 April 1984.— IZA 83108B, 27, Greece, L. Joannina (introduced), P.G. Bianco, 23 February 1976.
Diagnosis. A species of Leucos characterized by moderate size, not exceeding 160–170 mm SL, usually 120–140 mm SL; absence of a mid-lateral band; peritoneal membrane blackened by dense melanophores. Leucos panosi is quite similar to L. ylikiensis from which it differs mostly for the number of total GR, usually 18–20 in L. ylikiensis and 13–14 in L. panosi. It may be distinguished from L. basak for the number of LL scales, usually 42–43 as against 36–38 in L. basak. It may be distinguished from L. aula for the absence of lateral band and the color of the peritoneal membrane, black in L. panosi and silvery in L. aula. It differs from all other species of Leucos for the high number of total GR, usually 13–14 in L. panosi and 8–10 in all others, excepted L. ylikiensis that has a higher number of total GR, usually 18–20. The closest species, both on geographical distribution and molecular grounds (Fig. 1 B) is L. ylikiensis from western Greece.
Description. Body uniformly silvery without longitudinal band; color of eye in living fish, yellowish; fins yellowish or pale grayish in preserved specimens; a triangular pale, crescent spots at insertion of each scale of the body; snout pointed; pre-orbital distance near equal to the horizontal diameter of the eye; lips smooth; mouth terminal, or slightly inferior, its opening oblique; the corner of maxillae at the same level or slightly overpass the vertical crossing the anterior border of the orbit; profile of dorsum convex, slightly humped; paired and unpaired fins yellowish with few scattered melanophores; free margin of dorsal and anal fin concave; caudal fin moderately forked; peritoneal membrane blackened by several dense and fused melanophores; head length about 4.2–4.6 times in SL; body deep about 2.8–3.2 times in the SL; origin of the D placed slightly above the vertical crossing the insertion of the P2; LL complete, and extending from the margin of opercular membrane, to the end of caudal peduncle; 39–45 pored scales, usually 42–43; 7.5 above and 3.5 below the LL; 14 circum-peduncular scales; constantly 3 un-branched rays followed by 9 branched rays in the D; constantly 3 un-branched and usually 8 branched rays in the anal fin; P1 with 1 un-branched and 14–16 branched rays; P2 with 1 un-branched ray and constantly 8 branched rays; 12–16 total GR; fine granular tubercles on head and checks has been observed in adult reproductive males. For additional description and shape, see Fig. 2 D and Tables 1, 2.
Distribution. The species was reported for the Acheloos, and Louros river-systems in western Greece (Bogutskaya & Iliadou, 2006). The species was found also in lakes Trichonis and Ambrakia. Leucos panosi was introduced in Lake Joannina, (Leonardos et al., 2008), where it coexists with the introduced Rutilus rutilus.
Remarks on ecology, biology and conservation. A still-water adapted species. In fish communities, Leucos panosi tends to become dominant and invasive in lakes while it is quite rare in the flowing part of rivers Louros and Acheloos, (P.G. Bianco, pers. obs.). Spawners have been collected in February suggesting that the reproductive season may start at the end of January and extend possibly until March–April. The species is classified as of “Low Concern” among the IUCN (2013) categories.
description: Published as part of Bianco, Pier Giorgio & Ketmaier, Valerio, 2014, A revision of the Rutilus complex from Mediterranean Europe with description of a new genus, Sarmarutilus, and a new species, Rutilus stoumboudae (Teleostei: Cyprinidae), pp. 379-402 in Zootaxa 3841 (3) on page 391, DOI: 10.11646/zootaxa.3841.3.4, http://zenodo.org/record/225778