Aberrations in fish are rare, but extreme aberrations are seldom seen and almost unheard of. Over the years we’ve covered a heck load ofaberrant和杂交种fish, but this one today is quite something. RVS Fish World just bagged a really neat aberrantCryptocentrus pavoninoides, but there’s something unique about this guy.
In almost all aberrants we’ve seen, the fish usually show an abnormal deviation of its basic ground colour compared to the standard wild type, or a misalignment of a barred or spotted design, or even an extension of colour from a defined portion of the body. Rarely do we see a profusion of metallic sheen seen in this example ofCryptocentrus pavoninoides. In the wild type ofC. pavoninoides, the head region possesses some metallic green spotting, which can be seen also in the caudal peduncle area of the fish.
On a genetic level, a possible over expression of this metallic green speckling may have occurred and caused the entire right side of the face to be covered in the same metallic green pigment. On the left side, the fish expresses a relatively normal wild type spotting sans the top of its head.
尽管过度表达颜色是异常鱼类的正常突变，但我们几乎从未看到过如此夸张的金属方面。我们看到的唯一其他示例是金属彩色部分过度表达的是我们自己的异常的粉红色点火鱼.
Take this aberrantN. magnificafor example. In this fish we see an over expression of two genes, one coding for the normal non-metallic pink coloration, and the other coding for the shiny metallic pink. It is safe to say that this fire fish is aberrant both in its metallic and non metallic coloration, and is seen being over expressed profusely on the body region. What may have caused this genetic mutation is unknown, and it was most probably born this way.
As before, it is not often we see the metallic coloured portions of a fish being mutated. However when it does happen, the results can be magnificent, lending a sparkling blotch to an otherwise unassuming common species.
