分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
麗魚科 (Cichlids) > Geophaginae
Etymology: Biotoecus: Greek, biotos, ou = life, existence + Greek, oikos = house, habitat (Ref. 45335); dicentrarchus: Named for the 2 anal fin spines, Greek prefix 'di' for two and nouns 'kentron' for spine and 'archos' for vent; noun in apposition (Ref. 86446).
More on author: Kullander.
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: Orinoco River basin, from the Inírida River (Colombia) to Maripa, (Venezuela)
南美洲: 奧里諾科河河流域，從 Inirida 河, Maripa ，委內瑞拉的哥倫比亞。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 3.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 36377)
背棘 (总数) : 7 - 8; 背的软条 (总数) : 14 - 16; 臀棘: 2; 臀鳍软条: 6 - 8. This species is distinguished from all other cichlids by having only two (vs. three or more) anal spines; differs from B. opercularis by lacking anguloarticular lateralis canal; 3 or 4 (vs. 5) skin openings and 2 or 3 (vs. 4) canal fragments representing the dentary lateralis canal; dorsal fin with slightly prolonged anterior spines and lappets; modal dorsal fin count VII.15 (vs. VIII.14); and 6 (vs. 5) dark spots along the middle of the side (Ref. 86446).
Body shape (shape guide): elongated; Cross section: compressed.
The type locality was a shallow laguna about 25 m wide, with transparent water, vegetation resembling needlegrass; water temperature 34°C; associated with another cichlid species,
Crenicara filamentosum, the dominant species at the locality (Ref. 86446).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Eggs are deposited at the ceiling of a cave; the female tends to eggs and yolk-sac larvae; both parents care for the free-swimming young (Ref. 42051).南美洲: 奧里諾科河河流域，從 Inirida 河, Maripa ，委內瑞拉的哥倫比亞。
Kullander, S.O., 2003. Cichlidae (Cichlids). p. 605-654. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36377)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
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Estimates based on models
Phylogenetic diversity index (参考文献
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00283 - 0.01852), b=3.13 (2.91 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
回复力 (参考文献
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Assuming Fec<1000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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