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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Geophaginae
Etymology: Geophagus: Greek, gea = the earth + Greek, phagein = to eat (Ref. 45335); parnaibae: Named for the río Parnaíba basin where the species occurs.
Eponymy: These species are named after the Parnaíba River basin, Brazil. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性; pH range: 6.5 - 7.6. Tropical; 24°C - 31°C (Ref. 57445)
South America: Rio Parnaiba drainage in Brazil.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 7.6 cm SL オス/雌雄の選別がない; (Ref. 57445)
背面の脊椎 (合計) : 17; 背鰭 (合計) : 9 - 11; 肛門の骨: 3; 臀鰭: 7 - 8. Distinguished from all its congeners by the combination of the following characters: lack of a dark infraorbital stripe or black preopercular markings; a caudal fin with distinct longitudinal bands; only 30 to 31 scales in E1 row; and small size, maximum TL approximately 16 cm (Ref. 57445).
Inhabits bare sandy bottoms in brooks and small rivers with remarkably strong current during the rainy season. Also occurs frequently in pools and ponds with more or less stagnant water during the dry season and the period of low water (Ref. 57445). A specimen measuring 6.5 cm SL has 80% plant matter (mainly seeds), aquatic insect larvae, detritus and sand grains in its stomach and adjacent intestine (Ref. 57445).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Staeck, W. and I. Schindler, 2006. Geophagus parnaibae sp. n. - a new species of cichlid fish (Teleostei: Perciformes: Cichlidae) from the Rio Parnaíba basin, Brazil. Zool. Abh. (Dresden) 55:69-75. (Ref. 57445)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-2)
Human uses
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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02042 (0.00898 - 0.04642), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 2.5 ±0.1 se; based on size and trophs of closest relatives
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).
