在我们最近的文章中罕见的狗脸颊,除了激励文章的人外,我们能够覆盖每个物种。下面的图像是澳大利亚河豚,最近在日本的蓝港进入了蓝港,我们必须承认我们不知道它起初是什么。
这个生物的组成只是尖叫“Arothron”, but which one? The blue spots bring to mindA. caeruleopunctatus, but the rest of the coloration is all wrong. After that, there’s nothing else even remotely close in appearance—could this be an undocumentedArothronendemic to Western Australia?
这似乎完全令人难以置信,所以我们招募了西澳大利亚博物馆的ICHThyology博士的Glenn Moore博士的帮助。事实证明,我们咆哮着错误的树 - 这条鱼是Omegophora cyanopunctata。
Known by the common (and misleading) name “Bluespotted Toadfish”, this species is found along a small stretch of coastline from the southwestern shores of Australia—Rottnest Island near Perth in the west to Gulf St. Vincent in the east. It occurs at rocky reefs and manmade piers and jetties to a maximum depth of 25 meters and is regarded as a common inhabitant in this habitat.
它可以被引用的同名蓝斑识别,该蓝色斑点点点和侧面,以及在胸鳍底座上方的蓝色中振荡的不寻常的暗点。据报道,该特征是仅在男性中发现的性二态性格。最大大小cyanopunctata.只有18厘米,这使得这是一个完美的亚热带水族馆的品脱大小。
这个属的第二种种类,“环状浮游鱼”O. armilla,在澳大利亚南部有一个更广泛的范围,从东部的悉尼附近的植物园,南到塔斯马尼亚州北部到塔斯马尼亚州,西部到巴罗岛和宁加罗礁。这意味着范围cyanopunctata.is fully sympatric within that of阿米利拉。
有几个可能的解释,这两个可能有如何规定:1)O. armillais reported from deeper reefs, to a depth of 146 meters, where it is frequently taken as bycatch in fishing trawls. This is clearly a different habitat than the shallow reefs its sister species favors, so perhaps ecological specialization is the cause of their divergence. 2) Given the unusual sexual color differences, which is a rare condition amongst pufferfishes, maybe sexual selection is to blame?
环形的浮盆可以通过胸鳍上方的黑色半岩识别,这偶尔会发生成完全围绕翅片基底的环。雄性armilla据报道有时有蓝色斑点,与姐妹种类的人几乎相同,它们可以达到更大的最大尺寸高达25厘米。
Considering how similar these two taxa are, we can’t help but wonder if these are not in fact the same “species”. There are some minor differences in osteology and tooth counts which help further separate these two, but genetic study is surely warranted to decisively understand what is going on here.
Omegophorawas created in 1934 for what was thenTetrodon Armilla.;该名称可以转换为“欧米茄轴承”,参考胸鳍上方的半圆形标记。分子研究表明,这种属的是姐妹Arothron, which we suppose explains why we found it so easy to confuse the two.
最明显的差异之一,虽然微妙,是鼻开口上方的单翼片 -Arothronhas two. Furthermore, the frontal and prefrontal bones, which are situated in the roof of the skull between the eyes, are narrower and more truncated, though it’s difficult to see any outward manifestation of this. Other differences exist, but they involve abstruse minutiae of the internal anatomy best left to the brave souls devoting their lives to such masochistic study.
这些人造狗狗河口(NéeTaadfish)是那些喜欢保持酷的水族家的有趣的补充。如果您的65°F鱼坦克需要一点Pizzazz,请尝试添加其中一个迷人和罕见的Pufferfishes。但祝你好运找到一个!