龙鱼的繁殖和选择

龙鱼的繁殖和选择

龙鱼（详细介绍）

龙龙鱼是一种大型淡水鱼，属于幻舌鱼科。龙鱼有很多种。饲养员可以根据自己的喜好选择龙鱼。当然，仅仅喜欢龙鱼而不养龙鱼是不好的。大家都知道家鱼的生命力很弱。如果你想把龙鱼养好，你应该注意饲料、饲养和水质。

1、龙鱼的选择

1。鱼鳞颜色饱满，没有黑点。

2。当从上方观察时，鱼的脊椎不得歪斜或扭曲

3。鱼眼没有白色面罩，可以灵活地上下旋转

4。鳃盖靠近身体，不能向外转动，呼吸顺畅。

5。鱼嘴可以紧闭，牙齿完整

6。鱼的长度必须相同，并且没有破损和擦伤的痕迹

7。尾鳍、胸鳍、腹鳍和臀鳍没有红斑和损伤，可以很容易地展开和摆动

8。腹部没有严重凹陷

9。游泳姿势霸气，没有蜷缩的感觉

龙鱼（详细介绍）

2。龙鱼养殖要点

1。喂和喂龙鱼是一种肉食性鱼类。从幼鱼到成鱼，必须喂动物饵，所以喂小鱼是最好的。动物的内脏很容易对消化系统有害，不能喂食。大多数人工全价配方饲料是对虾饲料（漂浮）。每天喂食2至3次，每次最好在20分钟内。

2。池塘养殖管理

养殖池塘应建在阳光充足、易于进出和排水的地方。对于没有渗漏设备的水池，应每年将池底的淤泥捞出来，并用新鲜的沙子代替。开放的水池应该种植睡莲。每天定期清理枯叶和垃圾。当夏季温度较高，冬季温度较低时，应经常注入淡水以保持水位和温度

3。水族馆养殖管理

龙鱼的身体较大，水族馆的长度应超过120厘米，同时应安装紫外线消毒，以预防疾病。水族馆必须配备空气泵，不仅可以增加水中的溶解氧，还可以将水中高浓度的二氧化碳排出。水族馆也必须盖上盖子，以防止龙鱼在受到惊吓时跳入水中。水族箱内的水质至少每三天更换一次，每次更换1/4至1/3的水量。如果鱼鳍脱落，可能是淡水过多造成的。只要立即停止换水，它就能慢慢恢复。

4。龙鱼所需的水质

城里的人用自来水喂养热带鱼，基本上是中性水，其硬度和pH值符合喂养热带鱼类的要求，所以这方面不必太担心。然而，当使用自来水喂养热带鱼时，必须去除其中的氯。主要方法有干燥法和化学法。硒干燥法：可以在烈日下干燥两天后使用，也可以在缺乏光照的情况下干燥4-6天。化学方法：使用硫代硫酸钠去除氯。比例为每10千克水1克硫代硫酸钠。混合溶解后，可使用

5。水温是热带鱼生存的最重要条件。热带鱼是温度较低的动物，它们对温度极为敏感。如果温度不合适，它们很快就会死亡。骨舌鱼的生活水温应在25至30℃之间，生长温度应为28℃，昼夜温度不应超过3℃，否则会影响龙鱼的生长

6。疾病控制技术

龙鱼患病的原因有两个：第一，饲养和管理不当。如果水质不干净；淡水过多；下饵不当；手术过程中造成创伤。第二是护理不当。例如，突然的气候变化；细菌感染；酸雨会导致水质变化等。从外观上看，健康的龙鱼必须拥有笔直的背鳍、闪闪发光的腹鳍、闪闪发亮的鳞片和耀眼的金银。游泳时，鳍尾喜欢灵活灵活，鳃盖有一定程度的张开；患病的鱼面色苍白，游泳迟缓，尾鳍倾斜，鳃盖漂浮，眼球下垂，嗜睡。无论如何，它需要饲养员的细心照料。龙鱼的价格昂贵，照顾它难免会有一些麻烦。然而，饲养员可以通过遵循正确的方法使龙鱼的颜色变得耀眼

The breeding and selection of arowana

arowana (detailed introduction)

The arowana is a large freshwater fish belonging to the family Phantoglossidae. There are many kinds of arowana. The breeder can choose the arowana according to his own preferences. Of course, it is not good to just like the arowana and not to raise the arowana. Everyone knows that the vitality of domestic fish is weak. If you want to raise the arowana well, you should pay attention to feed, feeding and water quality

1、 Selection of arowana

1. The fish scale is full in color without dark spots

2. When viewed from above, the fish's spine must not be skewed or distorted

3. The fish eye is free of white mask and can be flexibly rotated up and down

4. The gill cover is close to the body, and does not turn out and breathes smoothly

5. The fish mouth can be closed tightly and the teeth are complete

6. The fish must be of the same length and free from broken and bruised marks

7. The tail fin, pectoral fin, abdominal fin and hip fin are free of erythema and damage, and can be easily expanded and swung

8. There is no serious depression in the abdomen

9. The swimming posture is domineering, without the feeling of curling up

Dragon fish (detailed introduction)

2. Key points of dragon fish breeding

1. Feed and feeding

Dragon fish is a carnivorous fish. From young fish to adult fish, animal bait must be fed, so feeding the small fish is the best. The internal organs of animals are easily harmful to the digestive system and cannot be fed. Most of the artificial full-price formula feed is prawn feed (floating). Feed 2 to 3 times a day, preferably within 20 minutes each time

2. Pond breeding management

The breeding pond should be built in a place with good sunshine and easy access and drainage. For the pool without leakage equipment, the sludge at the bottom of the pool should be fished out every year and replaced with fresh sand. The open pool should be planted with water lilies. Regularly pick up dead leaves and remove garbage every day. When the temperature is high in summer and low in winter, fresh water should be injected frequently to maintain the water level and temperature

3. Aquarium breeding management

The body of the arowana is large, and the length of the aquarium should exceed 120 cm. At the same time, ultraviolet disinfection should be installed to prevent disease. The aquarium must be equipped with an air pump, which can not only increase the dissolved oxygen in the water, but also drive out the high concentration of carbon dioxide in the water. The aquarium must also be covered to prevent the dragon fish from jumping into the water when they are frightened. The water quality in the aquarium should be changed at least once every three days, and 1/4 to 1/3 of the water quantity should be changed each time. If the fish fin falls off, it may be caused by too much fresh water. As long as the water change is suspended immediately, it can recover slowly

4. The water quality required by arowana

People in the city use tap water to feed tropical fish, which is basically neutral water, and its hardness and pH meet the requirements of feeding tropical fish, so there is no need to worry too much about this aspect. However, when tap water is used to feed tropical fish, the chlorine in it must be removed. The main methods are drying and chemical methods. Selenium drying method: It can be used after drying in the hot sun for two days, or drying in the lack of light for 4-6 days. Chemical method: use sodium thiosulfate to remove chlorine. The proportion is 1 gram of sodium thiosulfate per 10 kilograms of water. After mixing and dissolving, it can be used

5. Water temperature

Temperature is the most important condition for the survival of tropical fish. Tropical fish are narrow temperature animals, and they are extremely sensitive to temperature. If the temperature is not suitable, they will die soon. The living water temperature of bony tongue fish should be between 25 and 30 ℃, the growth temperature should be 28 ℃, and the temperature should not exceed 3 ℃ in the day and night, otherwise the growth of arowana will be affected

6. Disease control technology

There are two reasons for the disease of arowana: first, improper feeding and management. If the water quality is not clean; Too much fresh water; Improper baiting; Trauma was caused during operation. The second is improper nursing. For example, sudden climate change; Infection of germs; Acid rain causes water quality change, etc. From the appearance, the healthy arowana must have a straight dorsal fin, glittering abdominal fins, glittering scales and dazzling gold and silver. When swimming, the fin tail likes to be flexible and flexible, and the gill cover is open with a degree; The diseased fish is pale, sluggish in swimming, with tail fin inclined, gill cap floating, eyeball drooping and lethargy

Raising arowana is simple and not simple. In any case, it needs the careful care of the breeder. The price of the arowana is expensive, and it will inevitably have some trouble to take care of it. However, the breeder can make the color of the arowana dazzling by following the correct method