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GPS坐标的: 纬度 47°24'27",经度 19°1'4" (N47 24.45 - E19 1.07)
Blue discus fish (Symphysodon aequifasciatus)
The South American blue discus (Symphysodon aequifasciatus) fish parents feed their young with a so-called epidermal mucus, that appers on their skin in the brood care period. On the specimen that are kept in captivity sometimes the mucus is not produced properly, in this case the juveniles need to be fed in a different way, which is not so easy.
Note that the milk that is produced by the mammals is the secretion of the mammary glands in a certain perion, and that was actually evolved from the sweat glands during the millions of years. So if we step back a little bit and look to the big picture, the discus fish is "breastfeeding" its young. This form of the feeding and care is not so rare in the animal kingdom, as you might think, but the people often tend to overrate the mammals against the other animal (and plant) species.
目的地在旅遊指南:
布达佩斯(8,468张照片 + 21全景图像)
Buda Hills (Budai-hegység)(8,632张照片 + 21全景图像)
Pest megye (county)(15,122张照片 + 50全景图像)
布達佩斯及其周邊(15,989张照片 + 52全景图像)
匈牙利(27,287张照片 + 163全景图像)
并且还:
(在这里:Buda Hills)
Budakeszi(88张照片)
Pilisszentiván(76张照片)
这里每全景照片:
布达佩斯(21张照片)
Pest megye (county)(50张照片)
布達佩斯及其周邊(52张照片)
匈牙利(163张照片)
欧洲(165张照片)
每一个正常的照片在这里:
布达佩斯(8,468张照片 / 122画廊)
Buda Hills (Budai-hegység)(8,632张照片 / 124画廊)
Pest megye (county)(15,122张照片 / 221画廊)
布達佩斯及其周邊(15,989张照片 / 234画廊)
匈牙利(27,287张照片 / 462画廊)
欧洲(30,494张照片 / 523画廊)
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