分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
慈鯛科魚類 (Cichlids) > Pseudocrenilabrinae
Etymology: Sarotherodon: Greek, saros, -ou = sawdust + Greek, ther = animal * Greek, odous = teeth (Ref. 45335); knauerae: Named for Mrs. Barbara Knauer, former technician at the Max-Planck-Institut (Seewiesen), who substantially supported UKS as a technician and friend during his PhD studies (Ref. 86429).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性, usually 0 - 3 m (Ref. 86429). ; 6°N - 5°N, 8°E - 9°E
Africa: Lake Ejagham in Cameroon (Ref. 86429).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 7.7 cm SL 雄魚/尚未辨別雌雄; (Ref. 86429)
簡短描述
型態特徵 | 形態測量圖
背棘 (總數): 15 - 16; 背的軟條 (總數): 13-14; 臀棘 3; 臀鰭軟條: 10 - 12. Diagnosis: Sarotherodon knauerae is distinguished from all congeners by the possession of an inflated second pharyngobranchial element in the upper pharyngeal jaw, and is one of the smallest known Sarotherodon, reaching a maximum observed size of only 75.2 mm standard length (Ref. 86429). It further differs from sympatric Sarotherodon lamprechti in possessing a terminal, vs. prognathous, mouth; scaled pectoral fin base; short pectoral fins ending at or in front of anus, vs. reaching first anal fin-spine or beyond; and short pelvic fins ending well in front of anus, vs. reaching anus; additionally, S. knauerae possesses a shorter upper lip, 19.1–25.4% of head length vs. 22.5–28.4%, a higher total gill raker count, 24–30 vs. 20–25, and larger eyes, 24.0–31.2% of head length vs. 20.4–29.2% (Ref. 86429). It is distinguished from neighbouring riverine S. galilaeus populations from Cross, Wouri and Lower Niger rivers, S. g. multifasciatus and S. g. borkuanus by a shorter anal fin, 12.0–14.6% of standard length vs. 15.3–19.3%, 15.1–25.7% and 13.4–17.9% respectively; and narrower caudal peduncle, 12.8–14.5% of standard length vs. 16.0–18.7%, 13.9–18.3% and 13.6–17.4% respectively (Ref. 86429). It differs from S. caroli and S. linnellii in higher gill raker counts, 24–30 vs. 18–20 and 15–18 respectively; from S. g. sanagaensis in a lower preorbital depth, 17.8–23.0% of head length vs. 25.0–27.8%; and from S. g. boulengeri and riverine Sarotherodon galilaeus in a lower body depth, 36.5–43.9% of standard length vs. 44.5–50.0% and 43.5–44.6% respectively (Ref. 86429). Finally it differs from all other Lake Barombi Mbo Sarotherodon in a higher number of dorsal fin-rays, 13-14 vs. 10–12 (Ref. 86429).
A gregarious, predominantly benthic species found in Lake Ejagham; present in all habitats and at all depths, but most common inshore, to 3 m, than in deeper zones (Ref. 86429). The species is a detritivore, taking detritus from both soft and hard substrates as well as from the water surface (Ref. 86429). Presence of numerous juveniles in the dry season, January-February, suggests that reproduction takes place predominantly in the rainy season, August-September (Ref. 86429). Males do not vigorously defend courtship territories with a bower; in aquaria Sarotherodon knauerae are maternal mouth brooders (Ref. 86429).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
In aquaria Sarotherodon knauerae are maternal mouth brooders (Ref. 86429).
Neumann, D., M.L.J. Stiassny and U.K. Schliewen, 2011. Two new sympatric Sarotherodon species (Pisces: Cichlidae) endemic to Lake Ejagham, Cameroon, west-central Africa, with comments on the Sarotherodon galilaeus species complex. Zootaxa 2765:1-20 (Ref. 86429)
IUCN 瀕危狀態 (Ref. 130435)
極危 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 15 October 2014
人類使用
漁業:
更多資訊
俗名同種異名新陳代謝捕食者生態毒物學繁殖成熟度產卵場產卵群集孕卵數卵卵發育
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00827 - 0.04391), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.5 ±0.1 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
