分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Kronichthys: Because of Mr. Ricard Krone (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 熱帶; 20°C - 24°C (Ref. 13614)
South America: Ribeira de Iguape River basin.
南美洲: Ribeira de Iguape 河流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 12.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 13614)
Facultative air-breathing in the genus (Ref. 126274); Inhabits streams with rocky and sandy bottom, in places up to 0.8 m deep and with water flow up to 30 cm per second. Forages both during the day and at night. Grazes on microscopic algae, mostly diatoms and green algae growing on rocks and submersed vegetation. Occasionally takes chironomid and simuliid larvae, as well as tiny crustaceans. Before grazing on a patch with dense sediment, the fish makes wiggling head-down movements which raise sediment, to be blown away by the water current. When grazing algae off the substrate makes vigorous mouth movements, and moves by jerky movements probably related to its mouth making alternate grazing and attaching to the substrate. Leaves conspicuous grazing marks on exposed rocks. May re-graze a given spot by moving backwards. Density may reach about 1 fish per square meter in stream stretches shaded by the forest and 2.5 fish per square meter in sunny stretches (Ref. 26630).
栖息于溪流有岩石的，而且沙质底部, 在地方中向上到 0.8 公尺深而且水流大于 30 公分每秒。 觅食两者在白天期间而在夜晚。 啃食生长在岩石与生长水中的植物上的微小的藻类，大部分是硅藻与绿藻。 偶而吃宝刀鱼与 simuliid 仔鱼, 以及极小的甲壳动物。 在有密集沉淀物的地方上的啃食之前，鱼头部向下制造摆动蓄养沉淀物的运动, 被吹走藉由水流。 当啃食藻类在底部上作强有力的嘴运动, 而且藉着急动运动可能移动与制造交互的啃食而且吸附到底部的它的嘴有关了。 在裸露的岩石上离开显着的啃食标志。 可能藉由移动向后再啃食一个给定斑点。 密度可能达到被晴朗的支流的森林与每平方公尺 2.5个鱼遮蔽的水流支流的大约 1个每平方公尺鱼。 (参考文献 26630)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: Ribeira de Iguape 河流域。
Burgess, W.E., 1989. An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p. (Ref. 6868)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00337 - 0.01709), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.1 ±0.09 se; based on food items.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
