Mixing Danios

I often get questions about mixing Danios of different species in the same tank together. As a general rule, if the fish are close to the same size and temperament, there are no problems keeping them together.

There are exceptions to this in regards to the fish cross breeding.  With this in mind, the fish I would NOT keep together are;

  • Zebra Danios (Danio rerio) and Leopard Danios (Danio rerio var. frankei)
  • Celestial Pearl Danios (Danio margaritatus) and Emerald Dwarf Rasboras (Danio erythromicron)
  • Danio kyathit – There is a Spotted variety & a Striped variety.

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Spawning Devario xyrops

In July of 2012, I came into possession of some very hard to get Blue Moon Danio (Devario xyrops).  My good fortune came about due to my friend Dr. Stephan Tanner of Swiss Tropicals. Stephan has some super contacts in the aquarium hobby and often comes into possession of fish that are nearly impossible to obtain.  As I understand it, these fish came into Aqua Global in Germany as a bycatch of the fish collectors.  In other words, when the collectors are out catching fish, they happen to net a few, often unidentified, fish in the process. Sometimes these fish go unnoticed when the exporters are shipping the main group. Continue reading Spawning Devario xyrops