Классификация / Names
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Siluriformes (Catfishes) >
Amphiliidae (Loach catfishes) > Doumeinae
Etymology: howesi: The species name, howesi, is in honor of Gordon J. Howes, formerly of the Natural History Museum, London, in recognition of his many contributions to ichthyology (Ref. 92838).
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный демерсальный. Tropical
Africa: Luachimo River and its rapids (Kasai River drainage, middle Congo River basin) in Angola (Ref. 92838).
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 11.3 cm SL самец/пол неопределен; (Ref. 92838)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 0; членистые (мягкие) лучи спинного плавника (общее число) : 8; колючие лучи анального плавника: 0; членистые (мягкие) лучи анального плавника: 8 - 10; позвонки: 38 - 39. Congoglanis howesi differs from C. alula in the caudal-peduncle length relative to the caudal-peduncle depth (360%-380% vs. 260%-330%), the head depth (46-57% of head length vs. 38-45%), and the more attenuate head (Ref. 92838). It differs from C. inga in the length of the maxillary barbel, which is extending beyond posterior nostril but falling distinctly short of vertical through anterior margin of orbit vs. extending well beyond anterior margin of orbit, the body width at the dorsal-fin origin (14-16% of standard length vs. 17-20%), the postorbital length (29-32% of head length vs. 32-35%), the caudal peduncle length relative to the caudal-peduncle depth (360-380% vs. 210-290%), the number of vertebrae (38-39 vs. 35-37), and the length of the caudal peduncle, being 20-24% of standard length vs. 16-21% (Ref. 92838). It differs from C. sagitta in the length of the pelvic fin (22-28% of standard length vs. 19-21%), the head width (75-78% of head length vs. 63-73%), the length of the adpressed anal fin, reaching beyond the vertical through the posterior terminus of the adipose fin vs. reaching to or falling short of that vertical, and the length of the pectoral fin, being 26-32% of standard length vs. 23-27% (Ref. 92838).
Found in the rapids of the Luachimo River (Ref. 92838).
Life cycle and mating behavior
Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки
Vari, R.P., C.J. Ferraris Jr. and P.H. Skelton, 2012. New species of Congoglanis (Siluriformes: Amphiliidae) from the southern Congo River basin. Copeia 2012(4):626-630. (Ref. 92838)
Статус Красного Списка МСОП (Ref. 130435)
Угроза для людей
Harmless
Использование человеком
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref.
120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
