A dwarf among dwarves

Biotoecus opercularis.. Photo from https://www.ciklid.org/.

So you think your cichlid is a true dwarf species? Probably not when compared to Biotoecus opercularis. Typically maxing out at less than two inches in length, this little South American jewel is not commonly available in the hobby. Nonetheless, if you’re looking for a nice, soft water dwarf cichlid outside of the Apistogramma or Mikrogeophagus genera, this might just be your fish.

Check out this piece about the B. opercularis at Reef2Rainforest.

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