分類 / Names
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Orthochromis: Greek, ortho = straight + Greek, chromis = a fish, perhaps a perch (Ref. 45335); gecki: The species is named in honour of Mr. Jakob Geck who is a passionate, German fish naturalist, thanking him for his dedicated volunteer work and untiring support for the ichthyology section of the ZSM; his great experience in keeping rheophilic cichlids contributed to the knowledge of behaviour and ecology of many cichlid taxa, including Orthochromis katumbii and O. indermauri (Ref. 122085).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Tropical
Africa: Lubudi River, tributary of Lualaba River in Democratic Republic of the Congo (Ref. 122085).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 7.8 cm SL オス/雌雄の選別がない; (Ref. 122085)
簡単な記述
形態学 | 形態計測学
背面の脊椎 (合計): 16 - 17; 背鰭 (合計): 10-12; 肛門の骨 3; 臀鰭: 8 - 9; 脊つい: 29 - 31. Diagnosis: Orthochromis gecki can be readily distinguished from all species currently placed in Orthochromis, except O. torrenticola, which has eggspot-like maculae, by presence of eggspots on anal fin (Ref. 122085). It is further distinguished from O. kasuluensis by having fewer anal-fin rays, 8-9 vs. 10; from O. malagaraziensis by having more scales between upper lateral line and dorsal-fin origin, 5-8 vs. 3-4; from O. mazimeroensis by having more horizontal line scales, 29-31 vs. 26-28; from O. rubrolabialis, O. rugufuensis and O. uvinzae by having fewer anal-fin spines, 16-17 vs. 18-20, and in position of pterygiophore supporting last dorsal-fin spine, vertebral count 15-16 vs. 17-19; it is furthermore distinguished from O. uvinzae by having fewer abdominal vertebrae, 13-14 vs. 15-16, and by position of pterygiophore supporting last anal-fin spine, vertebral count 14-15 vs. 16-17 (Ref. 122085). Orthochromis gecki is distinguished from O. stormsi by having more horizontal line scales, 29-31 vs. 26-28, and fewer total gill rakers, 9-12 vs. 13-15; from O. polyacanthus by having fewer dorsal-fin spines, 16-17 vs. 18-20, more dorsal-fin rays, 10-12 vs. 8-9, and it is distinguished by position of pterygiophore supporting last dorsal-fin spine, vertebral count 15-16 vs. 17-18; from O. torrenticola by having fewer anal-fin spines, 3 vs. 4 (Ref. 122085). Meristic values of O. gecki overlap with those of O. luongoensis, O. kalungwishiensis, and O. machadoi but is distinguished by narrower interorbital width, 9.62-12.86% of head length vs. 13.18-21.27% (Ref. 122085). It is distinguished from Schwetzochromis neodon by having more circumpeduncular scales, 16 vs. 12; from Haplochromis snoeksi by having more anal-fin rays, 8-9 vs. 5-6; from Haplochromis bakongo by more horizontal line scales, 29-31 vs. 26-28, more dorsal-fin spines, 16-17 vs. 15, and by position of pterygiophore supporting last dorsal-fin spine, vertebral count 15-16 vs. 13-14; from Haplochromis moeruensis by having more horizontal line scales, 29-31 vs. 27-28, and more scales in upper lateral line, 21-25 vs. 19-20; meristic values of Orthochromis gecki overlap with those of Haplochromis vanheusdeni but is distinguished by having a smaller interorbital width, 9.62-12.86% of head length vs. 14.20-20.30% (Ref. 122085). It is distinguished from O. kimpala by having fewer series of scales on cheek, 0-2 vs. 3-4; meristic values of O. gecki overlap with those of O. mporokoso, O. katumbii, and O. indermauri but is distinguished by having smaller interorbital width, 9.6-12.9% of head length vs. 13.0-21.7% (Ref. 122085).
Found in a river which has a rocky bottom with patches of gravel and sand, and is about 15 meters wide and about 50 cm deep (Ref. 122085). This species seems to be a maternal mouthbrooder (Ref. 122085).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Schedel, F.D.B., E.J.W.M.N. Vreven, B. Katemo Manda, E. Abwe, A. Chocha Manda and U.K. Schliewen, 2018. Description of five new rheophilic Orthochromis species (Teleostei: Cichlidae) from the Upper Congo drainage in Zambia and the Democratic Republic of the Congo. Zootaxa 4461(3):301-349. (Ref. 122085)
Human uses
水産業:
より多くの情報
共通名の類義語代謝捕食動物生態毒性繁殖成熟放精卵の集合体生産力卵卵の開発
Age/Size成長体長-重さLength-length体長組成形態計測学形態学幼生幼生の動力補充豊度BRUVS
参考文献水産養殖水産養殖の紹介緊張遺伝子のElectrophoreses遺伝病気行列NutrientsMass conversion
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
