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> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Cichlinae
Etymology: Aequidens: Latin, aequus, equal, equally + Latin, dens, dentis = teeth (Ref. 45335).
More on author: Heckel.
Etymology: Aequidens: Latin, aequus, equal, equally + Latin, dens, dentis = teeth (Ref. 45335).
More on author: Heckel.
Taxonomic Remarks
Redescribed by Kullander & Ferreira (1990).
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
; 新鮮な水 底生の漂泳性; pH range: 6.5 - 7.5; dH range: ? - 10. Tropical; 22°C - 30°C (Ref. 40602)
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
South America: Amazon River basin, in the middle and lower Negro River, Uatumã, Preto da Eva, and Puraquequara rivers.
サイズ / 重さ / 年齢
簡単な記述 検索表 | 形態学 | 形態計測学
This species is moderately large (to c. 14.0 cm) with triserial predorsal scale pattern, relatively long pectoral fin (36.6-44.6% of SL) and 25-26 scales in the E1 row. It is most similar to A. tubicen, both of which have an enhanced, wide light spot anterior to the caudal spot, lateral band high on side, posteriorly positioned midlateral spot, and high vertebral count (14 + 13 = 27). A. pallidus differs from A. tubicen in the colour pattern, having a supraorbital spot, (vs. none in A. tubicen) and a normal cheek spot (A. tubicen has a preopercular spot). In this species the posterior part of the lateral band is uninterrupted at all sizes (vs. divided into blotches in A. tubicen). Aequidens pallidus, though resembling A. diadema, can be distinguished from the latter by having higher E1 scale row count 25-26 (vs. 24); much narrower dark margins on dorsal flank scales; and, more posteriorly positioned midlateral spot (through E3 scales 12-15 instead of c. 10-13) (Ref. 86501).
Body shape (shape guide): fusiform / normal.
Body shape (shape guide): fusiform / normal.
Collected from lotic black to clear water: in Rio Uatumá, this species was collected from marginal pools in rapids after the Balbina dam was closed and the river level dropped considerably below normal low water Ievel; Río Preto da Eva site was a relatively slow flowing small forest stream, while the Igarape Tarumázinho site was a swift flowing forest stream. Although collections indicate swamps and lakes, this species has been collected mostly in running water. Reported food items of specimens from Río Negro were chiefly fish and detritus (Ref. 86501). Inhabits rivers (Ref. 12251). Maximum length 20.0 cm TL (Ref. 40602).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Not a larvophil mouthbrooder (Ref. 40602).
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター : Kullander, Sven O. | 協力者
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)
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 商業; 水族館・水槽: 商業
FAO - Publication: search | FishSource |
より多くの情報
解剖学
カマ
脳
オトリス
カマ
脳
オトリス
生理学
体組成
栄養素
酸素消費
水泳タイプ
泳ぐ速さ
視覚色素
フィッシュ・サウンド
病気と寄生虫
毒性（LC50）
体組成
栄養素
酸素消費
水泳タイプ
泳ぐ速さ
視覚色素
フィッシュ・サウンド
病気と寄生虫
毒性（LC50）
遺伝子の
ゲノム
遺伝子の
ヘテロ接合性
遺伝
遺伝的多様性
ゲノム
遺伝子の
ヘテロ接合性
遺伝
遺伝的多様性
用具
特記事項
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インターネットの情報源
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モデルに基づく推定値
系統多様性指数 (参照 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02291 (0.01280 - 0.04101), b=3.17 (3.01 - 3.33), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (参照 69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
回復力 (参照 120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (Assuming Fec<1000).