Chromis viridis是礁石水族馆范式的常绿主食。它在该领域的无处不在，几乎在贸易中平均反映出，该物种扮演着名副其实的新手和职业爱好者。特定的称呼“viridis”是拉丁语起源，意思是“绿色”。这个名字恰当地赋予了蓝绿色的Chromis，其颜色让人想起春天的新鲜度。
在terestingly, this fish is a complex of two species with highly overlapping distributions. They areChromis viridisandChromis Atripectoralis。Both species are found in the same habitat of denseAcropora在浅水中。虽然这两种物种偶尔都混合在一起，但较大的成年人倾向于坚持自己的种类。
Both species were collected in a Coral Sea trip this week at Cairns Marine, and despite their immense ubiquity, it’s interesting to know thatC. atripectoralisremains incognito under the guise ofC. viridis。虽然这两种物种都没有大声喊叫，但实际上有多少业余爱好者知道他们的Chromis？
C. viridis在整个印度太平洋地区都可以找到，从非洲东海岸到线岛和Tuamotu群岛；向北到达龙京群岛，南到大堡礁和新喀里多尼亚。
类型标本C. atripectoralis从马歇尔群岛的比基尼环礁描述了。随后在斐济，玛丽安娜和菲律宾收集了副型。该物种主要是海洋的，除了夏威夷，侯爵夫人和皮特凯恩集团外，在整个大洋洲都发现了整个大洋洲。它在澳大利亚和北到日本发现。除了西澳大利亚州，泰国和塞舌尔的稀疏记录外，印度洋的大部分地区仍然没有。
根据这两种物种的分布记录，看来C. atripectoralis完全同胞在C. viridis, and does not venture out of the latter’s boundaries. Sympatric speciation is uncommonly seen in coral reef fish, but this appears to be a rather good example. Although, it cannot be ruled out that these species were perhaps allopatric, later merging in distribution due to range expansions.
这两个物种的行为差异似乎也略有不同。Chromis viridisprefers sticking closer to coral heads and bommies, whileC. atripectoralis偏爱更多的开放环境。当然，这些都是轶事，最好不要过分依赖它们。
Chromis Atripectoralis可以轻松地与C. viridis通过其胸鳍轴上存在一个大黑点。在C. viridis, this region is rarely marked, and even if, only the dorsal part (fin side) of the axil may be spotted very sparsely in black, fading to almost none on the ventral part (body side). InC. atripectoralis，这种轴是在许多黑点中突出标记的，它们会收敛以形成一个较大的，不同的斑点。金属绿松石环通常围绕着它。两者也可以通过胸腔射线计数的差异来分开。17或18C. atripectoralisvs 15 or 16 inC. viridis。
这viridisVS.Atripectoralis混乱只是冰山一角。在检查这两种物种的区域人群时，我们看到了男性不一致的求爱颜色。这些是否仅仅是地理变体，或者这些是同质表型隐藏的隐性物种，这是未知的。但是也许最好离开这个Chromiscan of worms unopened for now.
这humble and pedestrian Green Chromis may be fun to laugh at, but there’s more to it than meets the eye. Goes to show that you can still find joy in the life’s simplest pleasures. I think?
