ROAexcelsais a unique deepwater butterflyfish that is part of a very interesting genus of reef fish. The Excelsa butterflyfish has three sibling species includingROA MODESTA,ROAjayakari和the fairly newRoa Australis. We’ve featured the modest butterflyfish,ROA MODESTAbefore, so it’s time to give the superstar in the genus the proper awesome fish spotlight treatment.
Relatively recently theROAgenus was split off from the more widespreadChaetodonmaking the four species in the genus part of a very interesting offshoot of butterflyfish. Where your standard issue butterflyfish is part of the nearly88 species ofChaetodon,ROA是一个奇怪的分支，只有几个成员Chelmon和Amphichaetodon, but it shares some features in common with bothPrognathodes和Heniochus.
至少有几个成员ROAincluding the Excelsa in focus today, have a preference for quite deep waters. And indeed,ROAexcelsa通常是在夏威夷收集的，旁边是同样杰出的橙色蝴蝶鱼，必威官网登录随行版Prognathodes basabei. However the sloping head profile, bold angular markings and very high ‘war crest’ of a dorsal fin are so much more reminiscent of a basicHeniochusbutterflyfish.
如果您以前看过Roa蝴蝶鱼，那可能是必威官网登录随行版ROA MODESTA这具有不幸的本质，成为“穷人的Excelsa”蝴蝶鱼。必威官网登录随行版ROA MODESTA在相对较浅的深度中发现在东南亚的沿海水域，因此该物种会不时弹出在常规的鱼类商店中。
However, compared to the real-dealROAexcelsa,ROA MODESTA是个Chelmon muellerito a true copperband butterflyfish.ROA MODESTA是该属的原型ROAjayakari, and reaches a zenith of color, pattern, body shape and attitude that culminates inROAexcelsa.
全部态度ROAexcelsa当您看到它的前进时，它会亮起，其突出的大背刺提醒任何可能的捕食者，这条鱼很难吞咽。大胆的三角形白色和黑色标记给了这个ROAspecies such a dramatic appearance that it is no surprise that rare fish collectors yearn for this very deep water species.
这批新的新批次ROAexcelsacome to us courtesy ofBlue Harbor Japan这获得了深水夏威夷蝴蝶鱼的整个礁石。必威官网登录随行版工作人员Kengo Zeze拍摄的图像是我们有史以来最好的物种的最好的图像，正是因为它们是一些最好的标本ROAexcelsa我们曾经遇到过。
作为这些稀有和特殊的深水鱼类的水族馆爱好者，我们唯一喜欢的东西比在水族馆看到一个健康的水族馆标本更喜欢的是看到了整个蝴蝶鱼。必威官网登录随行版这两个r的视线OA Excelsa和五个预后Basabeiswimming together in their own dedicated aquarium, with realistic reef wall, cool water and reduced lighting is probably the best way to frame these living works of art.
