分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Actinopteri > Cichliformes
(Cichlids, convict blennies) 鱸形目 (Cichlids, convict blennies)
(Cichlids) 麗魚科 (Cichlids)
Etymology: Geophagus: Greek, gea = the earth + Greek, phagein = to eat (Ref. 45335); sveni: The specific name sveni is a patronym for Sven Kullander, in recognition of his many contributions to Cichlid Systematics (Ref. 84008).
Environment: milieu / climate zone / depth range / distribution range
; 淡水 居于水底的. ; 9°S - 11°S, 48°W - 49°W
South America: Brazil. Known from the middle portions of the Rio Tocantins drainage (Ref. 84008).
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 16.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 84008)
型态特徵 | 形态测量图
The lack of head markings distinguishes Geophagus sveni from G. grammepareius, G. taeniopareius, G. harreri, G. argyrostictus, and G. gottwaldi which have a complete infra-orbital stripe, and from G. dicrozoster, G. winemilleri, G. brachybranchus, and G. proximus, which have a black preopercular marking. Preserved specimens of Geophagus sveni can be distinguished from all other Geophagus species without head markings (except G. parnaibae) by the possession of five faint vertical, parallel bars on the flank (vs. absent in G. megasema, G. camopiensis and G. altifrons; four in G. surinamensis, and six in G. abalios and G. brokopondo). Geophagus sveni can be distinguished from by its lateral bars (solid bars vs. second and third bars medially bisected by a clearer area, respectively) and the colour pattern of the caudal
fin, which is composed by alternating vertical light and dark bars (vs. alternating horizontal light and dark bars in G. parnaibae). The prominent mid-lateral blotch occupying rostro-caudally five or six scales width and reaching the row immediately above the upper lateral line distinguishes G. sveni from G. abalios, G. surinamensis, G. altifrons, and G. brokopondo. Geophagus sveni can be distinguished from G. camopiensis by the rounded mid-lateral blotch (vs. quadrate-like). Geophagus sveni differs from the sympatric and syntopic Geophagus neambi by the presence of five faint vertically bars (vs. seven or eight conspicuous dorso-ventral bifurcated vertically bars); live specimens with anterior portions of horizontal stripes conspicuously reddish and posterior portions orange (vs. anterior portions slightly more orange than the posterior portions) and three iridescent blue vertical spots present extending along the preopercle (vs. iridescent blue spots absent) (Ref. 84008).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Lucinda, P.H.F., C.A.S. Lucena and N.C. Assis, 2010. Two new species of cichlid fish genus Geophagus Heckel from the Rio Tocantins drainage (Perciformes: Cichlidae). Zootaxa 2429:29-42. (Ref. 84008)
CITES (Ref. 123416)
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00401 - 0.03286), b=3.10 (2.86 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
营养阶层 (Ref. 69278
): 2.3 ±0.1 se; based on size and trophs of closest relatives
回复力 (Ref. 120179
): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
脆弱性 (Ref. 59153
): Low vulnerability (24 of 100) .
Nutrients (Ref. 124155
): Calcium = 271 [145, 520] mg/100g ; Iron = 2.04 [1.27, 3.86] mg/100g ; Protein = 18.1 [16.7, 19.5] % ; Omega3 = 0.356 [0.145, 1.012] g/100g ; Selenium = 57.1 [25.4, 118.5] μg/100g ; VitaminA = 24.5 [7.3, 67.3] μg/100g ; Zinc = 2.46 [1.70, 4.38] mg/100g (wet weight);