银龙鱼的形状特征

银龙鱼的形状特征

银龙鱼

因为银龙鱼（详细介绍）在亚洲是作为一种风水鱼饲养的，因此非常受水族馆爱好者的欢迎。龙鱼的形状与古代神话中的“龙”相似，银龙鱼的颜色也很特殊，因此银龙鱼是中国主要的观赏鱼之一，延伸回到尾柄的底部。下颌比上颌更突出，有一对又短又厚的胡须。五排大鳞片整齐地排列在它的大鱼身上。在灯光下，它闪耀着银光。每个鳍在光线下反射出明亮的红色或橙色光泽。幼鱼的体色是蓝色的，背部和臀部有红色和蓝色的边缘。金龙的鳞片边缘呈金黄色，每个鳍呈金红色。红龙的体色为金黄色，鳞片边缘呈金色，嘴和鳃盖有暗红色斑块，每个鳍都呈暗红色。银龙的身体呈银白色，黑龙的身体颜色为银白色，带有浅青色紫色，背面是蓝黑色的。这条银色的腰带有一个非常细长的侧面。嘴位于上方，嘴裂缝延伸到眼窝的后缘。下噪比上颌更突出，前方有几个线性的侧器官，吻端有一对触须。在自然环境中，嘉友野生个体的触手可以延伸到3-4厘米，但人工饲养的个体由于生长限制，只能长到1-2厘米。下颌的牙齿骨骼非常发达，在上下颌之间排列成梳子状的锥形牙齿非常小而锋利。牙齿之间的间距很窄。不仅上颌前骨，牙骨和舌骨的副蝶骨也发育良好。它是为了一口咬碎大型甲壳类动物和甲虫而开发的。此外，上下颚更注重猎物的狩猎功能，而不是牙齿的咬合力。咕噜的大眼睛靠近上颚的前缘，视力非常好。鼻子很短。鼻孔位于双眼前部上方，非常靠近鼻子。背鳍和臀鳍很长，臀鳍的起点比背鳍更靠前。延伸腹鳍的第一棘甚至超过臀鳍的起点。胸鳍非常发达。身体侧面覆盖着五排又大又漂亮的圆形鳞片。侧线从头部后鳃盖后缘的顶部延伸到尾柄。身体高度约为身体长度的五分之一。五到八岁的雄鱼体高约90厘米，远高于雌鱼。身体的中部甚至可以接近两厘米。如此引人注目的外观是任何昂贵的亚洲龙鱼都无法比拟的。不幸的是，现在很难找到这种形状的银色腰带。

灰绿色的身体巧妙地与银色混合在一起。如果在幼鱼、亚成鱼和成鱼阶段喂食磷虾，由于类胡萝卜素的作用，红色横带会插入背鳍和臀鳍，身体一侧鳞片的外缘也会变红。当成鱼时，红色变浅，变成烟熏银和白金。背鳍和臀鳍边缘的白色味道更强，这使得原本庞大的身体变得更大。由于性别差异，雌鱼的颜色略深，看起来较暗。无论男女，背部都是灰绿色，当作为背景色时非常舒适。然而，身体侧面的强烈镜像现象使得除了在繁殖期之外，在光线下很难区分雄鱼和雌鱼。还有一小部分所谓的白金和银带颜色变异个体患有白化病

The shape characteristics of silver arowana

Silver arowana

Because silver arowana (detailed introduction) is raised as a feng shui fish in Asia, it is very popular with aquarium lovers. The shape of the arowana is similar to the "dragon" in ancient mythology, and the color of the silver arowana is also very special, so the silver arowana is one of the main ornamental fish in China

The body of the silver dragon fish is in a long belt shape, the side is flat, the tail is in a fan shape, and the dorsal fin and buttock are in a belt shape, extending back to the base of the tail handle. The lower jaw is more prominent than the upper jaw, with a pair of short and thick whiskers. Five rows of large scales are neatly arranged on its large fish body. Under the light, it is shining with silver light. Each fin reflects bright red or orange luster under light. The body color of the young fish is blue, with red and blue edges on the back and buttocks. The scale edge of the golden dragon is golden yellow, and each fin is golden red. The body color of the red dragon is golden yellow, the scale edge is golden red, the mouth and gill cover have dark red patches, and each fin is dark red. The body of the silver dragon is silvery white, the body color of the black dragon is silvery white with light cyan purple, and the back is blue black

The silver belt has a very slender and thin side shape. The mouth is located above, and the mouth crack extends to the posterior edge of the eye socket. The lower noise is more prominent than the upper jaw, and there are several linear lateral organs in front of it. There is a pair of tentacles at the snout end. In the natural environment, the tentacles of the wild individuals in Jiayou can extend to 3-4 cm, but the individuals in artificial feeding can only grow to 1-2 cm due to the growth restriction. The tooth bones of the lower jaw are very developed, and the conical teeth arranged like combs between the upper and lower jaw are very small and sharp. The spacing between the teeth is very narrow. Not only the anterior maxillary bone, but also the accessory sphenoid bone of the dental bone and the lingual bone are well developed. It was developed to crush large crustaceans and beetles in one bite. In addition, the upper and lower jaws pay more attention to the hunting function of prey rather than the bite force of their teeth

Gill rakes develop into spines. Gulu's big eyes are close to the front edge of the upper jaw, and her vision is very good. The snout is very short. The nostrils are located above the front of both eyes, very close to the snout. The dorsal fin and gluteal fin are very long, and the starting point of the gluteal fin is more forward than the dorsal fin. The first spine of the extended abdominal fin even exceeds the starting point of the gluteal fin. The pectoral fin is very developed. The body side is covered with five rows of large and beautiful round scales. The lateral line runs from the top of the rear edge of the head's rear gill cap to the tail handle. The body height is about one fifth of the body length. The body height of male fish aged from five to eight, which is about 90 cm, is much higher than that of female fish. The middle part of the body can even be close to two centimeters. Such a compelling appearance can't be matched by any expensive Asian arowana. Unfortunately, the silver belt with this shape is hard to find now

The gray-green body is cleverly mixed with silver. If krill is fed in the juvenile, sub-adult and adult stages, due to the effect of carotenoids, red transverse bands will be inserted in the dorsal fin and hip fin, and the outer edge of the scales on the body side will also turn red. When the adult fish, the red color becomes lighter and becomes smoked silver and platinum. The white taste on the edge of the dorsal fin and the hip fin is stronger, which makes the originally large body even larger. Due to gender differences, the female fish is slightly darker and looks dark. The back is gray-green regardless of male and female, which is very comfortable when viewed as the background color. However, the strong mirror phenomenon on the side of the body makes it difficult to distinguish male and female fish in the light except in the breeding period. There are also a small number of so-called white gold and silver band color variation individuals with albinism