In my opinion the Chrysiptera Damsel is one of the best fish to keep as long as your aquarium is at least 75 gallons. They’re very inexpensive, hardy, disease resistant, and highly tolerant to medications. They also contribute almost negligible bioload. And of course, the blue ones are especially gorgeous.
The downfall? Most people say they’re too aggressive for a community aquarium. In my experience, this is only true if the aquarium is smaller than 75 gallons. I have included a blue Chrysiptera damsel in every one of my medium-large aquariums over the past 2 decades and I’ve never had any issues. Currently my custom 100 gallon cube tank includes:
Female Chrysiptera cyanea (3”)
Chrysiptera springeri (2”)
Female/male Ocellaris clown pair (4”/2”)
Orchid dottyback (3”)
PJ Cardinal (4”)
Coral beauty (4”)
2 Flame hawkfish (3” and 2”)
Male and female Lyretail molly (Poecilia latipinna) (4” and 3”)
They’ve all been living together for 2+ years without any issues. Not even a single torn fin.
So why do people report issues? Is it just an issue with overstocking and/or undersized tanks?
EDIT: one very important detail that I left out - I’ve never attempted a male Chrysiptera taupou or male Chrysiptera cyanea in a community aquarium. From what I’ve read, those ones can be much more belligerent. I did keep a male Chrysiptera taupou in a 180 gallon FOWLR tank with a Maroon clownfish and predator fish 10+ years ago with success though.
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