Freshwater Fish‎ > ‎Other Fishes‎ > ‎

Monodactylus argenteus


Monodactylus argenteus
Silver Mono
银鳞鲳
The silver moony also known as mono argentus, silver moonfish, fingerfish or Malayan angel, is a perciform fish, usually found in the Red Sea and East Africa to Samoa, North to the Yaeyamas, south to New Caledonia and Australia. Silver moony has a silver body in a triangular shape. The big eyes are crossed by a dark ray. Its fins are silver with yellow reflection. Both, yellow and dark colouring, are fading with age. It is also confused, rarely, with Monodactylus sebae, but easily distinguished by its other black ray that crosses where its tail starts, darker color and less yellow coloration. It is commonly called fingerfish because its genus Monodactylus means "one finger".

One of the most commonly kept in brackish water aquaria. It is a shoaling fish that needs to be in groups of three and can grow up to 12 inches, but more commonly 8 inches in aquaria. The biggest requirement for this fish is that as a juvenile it resides in mild brackish water, but travels downstream to ocean, which means as it grows, it needs to be acclimated to increasing specific gravity or salinity. To mimic this in the home aquarium, it should be started at 3-4 tablespoons of marine salt per gallon of water for juveniles. An extra tablespoon would then be added monthly during water changes, the salt should always be dissolved completely in a separate container. It should be continued until about a cup of marine salt per gallon is being added, which is the normal marine salinity. To be more accurate, a swing handle or a floating hydrometer should be used to accurately measure the specific gravity, that needs to be raised by 0.002 every month, starting from 1.008 for juveniles to 1.023-1.024 for adults. It may be kept with other marine fish in an FOWLR marine aquarium, provided it is large enough.
Feeding is not much of an issue because they will eat anything once they are acclimated. They will eat flake food, pellet food, bloodworms, tubifex, brine shrimp, spirulina, etc. They also need much vegetable matter, so feed them lettuce, spinach, whatever leafy greens are on hand.
Tankmates are not much of a worry, as long as they are peaceful such as archerfish, scats, mollies, halfbeaks, etc. They prefer to be in schools and will normally chase each other to establish a pecking order.

体极侧扁,略呈菱形。眼大,吻尖。鳞片细小。鱼体为银白色,背鳍与臀鳍略为对称。幼鱼颜色较鲜艳,除尾鳍外各鳍为橙黄色具黑缘,且头部具2条黑色细横带;成鱼则较不明显。尾鳍截形。
习性:
生活于热带地区,常见于河口、红树林、内湾等砾石或沙泥底质区域;对盐度变化的耐受性极佳,能在淡水中生活,属广盐性鱼类。具领域性。肉食性,以浮游动物及小型甲壳类为主。
分布:
印度-西太平洋热带海域,包括台湾西、南部地区。
综述:亦称月亮鱼(moonfish)或大眼鲳。鲈形目(Perciformes)银鳞鲳科(Monodactylidae)鱼类之通称,6种,分布于西非大西洋沿岸至印度洋-太平洋地区,通常居于沿海或港湾水域中。体形侧扁,高度大于长度。由于这种体形及鳞所特有的银色,有时又被称为月亮鱼。鳞可分布到鳍上。银大眼鲳(Monodactylus argenteus)分布于东非到马来西亚,是一种很受欢迎的观赏鱼,体长可达20公分(8吋),头部有两条垂直黑色带纹;西非的条纹银鳞鲳(M. sebae)也是受欢迎的观赏鱼。
Comments