分类 / Names
俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri > Cichliformes
(Cichlids, convict blennies) 鱸形目 (Cichlids, convict blennies)
(Cichlids) 麗魚科 (Cichlids)
Etymology: Aequidens: Latin, aequus, equal, equally + Latin, dens, dentis = teeth (Ref. 45335). More on author: Heckel.
Environment: milieu / climate zone / depth range / distribution range
; 淡水 底中水层性; pH range: 6.5 - 7.5; dH range: ? - 10. 熱帶; 22°C - 30°C (Ref. 40602)
South America: Amazon River basin, in the middle and lower Negro River, Uatumã, Preto da Eva, and Puraquequara rivers.
南美洲: 亞馬遜河流域, 在尼格羅河， Uatuma 中下游中, Preto da 伊娃 , 與 Puraquequara 河。
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 14.3 cm SL 雄鱼/尚未辨别雌雄; (Ref. 36377)
型态特徵 | 形态测量图
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).
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).
栖息于河。 (参考文献 12251) 最大的长度 20.0 公分TL.(参考文献 40602)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Not a larvophil mouthbrooder (Ref. 40602).南美洲: 亞馬遜河流域, 在尼格羅河， Uatuma 中下游中, Preto da 伊娃 , 與 Puraquequara 河。
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 (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=0.02570 (0.01391 - 0.04749), b=3.18 (3.02 - 3.34), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
营养阶层 (Ref. 69278
): 3.2 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref. 120179
): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Assuming Fec<1000).
脆弱性 (Ref. 59153
): Low vulnerability (20 of 100) .