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Trichogaster microlepis


Trichogaster microlepis
Silver Moonlight Gourami
银曼龙足鲈
Moonlight gourami (Trichogaster microlepis) is a labyrinth fish of the family Osphronemidae. It may also be called the moonbeam gourami. This peaceful, attractive species is a popular aquarium fish. The moonlight gourami is native to the Mekong River in Cambodia and Vietnam and Chao Phraya basins. This species has been introduced into the Mekong basin in Thailand. 
This species is found in ponds and swamps. It occurs in shallow, sluggish, or standing water habitats with a lot of aquatic vegetation. It is also common in the floodplain of the lower Mekong. An adult moonlight gourami reaches a length of to up 13 centimetres 
These fish are silvery colored with a slightly greenish hue similar to the soft glow of moonlight. The moonlight gourami’s concavely sloped head distinguishes it from other gourami varieties. The males can be identified by the orange to red coloration of the pelvic fins, as well as the long dorsal fins which ends in a point. In females, the pelvic fins are colorless to yellow, and the dorsal fins are shorter and rounder. During spawning, in males, the orange thread-like ventral fins will intensify and become red. The moonlight gourami eats insects, crustaceans, and zooplankton.
Like all labyrinth fish, the moonlight gourami has a special lung-like organ that allows it to breathe air directly. Because of this labyrinth organ, it is not unusual to see it go to the surface and gulp air. The ability to breathe air allows the Moonlight Gourami to survive in very low oxygen situations. In fact, if it remains moist it can actually survive out of water for up to several hours.
As with other labyrinth fish, these species are oviparous and employ bubble nests in reproduction and care of fry. The male moonlight gourami begins the spawning process by carefully preparing a bubble nest; this bubble nest tends not to incorporate much plant matter and the bubbles may float around freely. It will then begin to court the female under it by performing a "courtship dance" behavior. Spawning culminates when the male finally wraps itself around the female. While in this embrace, the male turns the female on to her back triggering the female to release her eggs. Up to 2000 eggs may be laid during spawning. The male will fertilize the eggs as they float up to the prepared bubble nest. In the safety of the bubble nest the eggs will incubate for about two to three days before finally hatching. Although undemanding about water conditions and requires only intermediate care, it thrives best in soft acidic water. Because it is so tolerant of less than perfect water, it is often recommended for a beginner in the fishkeeping hobby. However, as in most other fishes, regular water change will help maintain the health of the moonlight gourami. Ideal pH level for the gourami is 6.0–7.0 with the water hardness at 2–25 dGH and the temperature kept between 22–28°C 
It thrives in a heavily planted aquarium. Preferable vegetation are the sturdy Java fern and Vallisneria. The moonlight gourami are social and peaceful fish that are suitable for community tanks. However, large specimens, particularly males, may attack others of the same or closely-related species. On the other hand, the moonlight gourami could be a shy and timid fish that regularly hides behind vegetation and gets bullied by more aggressive tank mates. The moonlight gourami is also a top or middle tank-level dweller. Minimum tank size requirement is 20 gallons.
The moonlight gourami will accept flakes, frozen and live foods. However, in the case of community tanks, other large, fast fish can scare the moonlight gourami away from food as the timid gourami does not compete well for its meal even if starving.

体长10-25cm,是金曼龙的变异品种。饲养水温22-28℃,水质要求不言。它有一个辅助呼吸器官,当水中缺氧时,可直接露出水面呼吸。繁殖水温26-27℃,亲鱼性成熟年龄6个月。雄鱼繁殖期间有鲜艳的婚姻色,雄鱼背鳍末梢尖长,雌雄交易分别。属泡沫卵生鱼类,水面飘浮几颗水草,雄鱼依托水草吐出大量泡沫浮在水面,受精卵浮在泡沫中。雌鱼每次产卵500--1000粒。
  金曼龙鱼性情温和,可以和其它品种的热带鱼混养,它们对水质无严格要求,水温18℃以上,黄曼龙鱼长有辅助呼吸器官-褶鳃,可以生活在含氧量少的水中,以动物性饵料为食
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