Chiloglanis deckenii Peters 1868

Schmidt, Ray C., Bart Jr, Henry L. & Nyingi, Wanja Dorothy, 2015, Two new species of African suckermouth catfishes, genus Chiloglanis (Siluriformes: Mochokidae), from Kenya with remarks on other taxa from the area, Zootaxa 4044 (1), pp. 45-64: 56-57

publication ID

http://dx.doi.org/10.11646/zootaxa.4044.1.2

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lsid:zoobank.org:pub:9E1A791F-650C-4ED8-AEB1-6325B1FB3409

persistent identifier

http://treatment.plazi.org/id/03BC87F4-873B-A96C-FF02-FA2DF890F94C

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scientific name

Chiloglanis deckenii Peters 1868
status

 

Chiloglanis deckenii Peters 1868 

Within Kenya, Chiloglanis deckenii  only occurs in the Pangani River basin ( Fig. 1View FIGURE 1). It is likely restricted to the Pangani River basin in Tanzania but a similar species is reported to occur within the Wami and Rufiji Rivers to the south ( Seegers 2008). This species was collected in large numbers in the Lumi River (Lake Jipe affluent) near rocks in fast flowing water. This species is distinguished from other Kenyan suckermouth catfishes in having long mandibular barbels and an oral disc that is distinctly wider than long ( Fig 5View FIGURE 5). Morphometric measurements and meristic counts of Kenyan C. deckenii  are found in Table 3.

C. somereni  (N= 22) C.deckenii  (N= 15) C. sp aff. deckenii Tsavo R.  (N= 20) MORPHOMETRICS Range Mean±%SD Range Mean±%SD Range Mean±%SD Standard length (mm) 42.6 –68.0 28.0– 62.2 33.1–48.6

Head length 27.3–31.8 29.5 ± 1.3 26.6–31.5 28.5 ± 1.4 29.0– 32.8 30.8 ±1.0 Head depth (maximum) 14.3–17.9 15.8 ±1.0 16.0– 21.1 18.0± 1.4 14.7–17.9 16.2 ±1.0 Body depth at anus 11.9 –15.0 13.9 ± 0.7 15.1–19.8 16.9 ± 1.4 13.8–17.6 15.8 ± 1.1 Occipital shield width (minimum) 5.5 –7.0 6.4 ± 0.5 3.9–5.4 4.6 ± 0.4 3.0– 4.8 3.8 ± 0.4 Prepectoral length 27.4–30.1 28.9 ± 0.7 26.0– 29.1 27.8 ± 0.9 27.9 –32.0 29.7 ± 1.1 Predorsal length 38.0– 42.5 40.3 ± 1.2 36.4–40.6 38.5 ± 1.2 38.4 –43.0 40.7 ± 1.4 Prepelvic length 55.0– 60.2 57.4 ± 1.4 53.8–61.4 57.2 ± 1.7 55.9–63.2 58.1 ±2.0 Preanal length 68.6–74.4 70.9 ± 1.5 66.8–72.3 69.7 ± 1.8 68.9–76.3 7.1 ± 1.8 Eye diameter (horizontal) 3.4–4.5 3.8 ± 1.1 3.8–5.5 4.2 ± 0.5 3.8–5.1 4.4 ± 0.3 Orbital interspace 7.3–8.6 8.0± 0.4 6.3–7.9 7.0± 0.5 5.5–7.8 7.0± 0.6 Snout length 15.7–20.5 18.4 ± 1.2 16.9–18.6 17.9 ± 0.5 18.0–22.0 19.4 ±1.0 Premaxillary tooth-patch width 10.0– 14.1 11.5 ±1.0 10.2 –14.0 12.3 ± 1.1 11.6–15.1 12.7 ± 0.9 Premaxillary tooth-patch length 2.0– 3.6 2.8 ± 0.4 2.1–2.9 2.5 ± 0.3 2.6–3.5 3.1 ± 0.2 Mandibular tooth row width 1.9–2.6 2.2 ± 0.2 1.5–2.6 2.0± 0.4 1.6–2.6 1.9 ± 0.3 Anterior nares interspace 3.6–5.1 4.4 ± 0.4 3.4–4.8 3.8 ± 0.4 3.8–5.4 4.5 ± 0.4 Posterior nares interspace 3.1–4.3 3.7 ± 0.4 3.5–4.8 4.0± 0.4 3.8–5.1 4.4 ± 0.3 Maxillary barbel length 7.5–11.9 9.5 ± 1.3 7.8–11.5 9.4 ± 0.9 6.8 –11.0 9.1 ± 1.1 Medial mandibular barbel length 2.1–3.7 2.9 ± 0.5 2.0– 3.3 2.7 ± 0.4 1.5–3.3 2.7 ± 0.5 Lateral mandibular barbel length 3.4 –5.0 4.1 ± 0.4 4.0– 5.6 5.1 ± 0.4 3.2–5.9 4.4 ± 0.6 Mouth width 7.7–10.9 9.0±1.0 7.1–8.9 8.0± 0.6 6.4–10.8 8.6 ±1.0 Oral disc width 17.4–21.5 19.4 ± 1.2 14.9–20.4 17.6 ± 1.3 18.2–22.4 19.8 ± 1.3 Oral disc length 17.1–20.9 18.8 ± 1.1 13.4–16.1 14.9 ± 0.8 16.8–21.2 18.7 ± 1.1 Upper lip length 3.7 –6.0 4.8 ± 0.5 3.0–4.0 3.6 ± 0.3 3.4–5.4 4.6 ± 0.5 Lower lip length 6.4–8.8 7.7 ± 0.6 5.4–7.4 6.3 ± 0.6 6.4–7.8 7.1 ± 0.4

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