Gobioides

This fish is also commonly sold as the dragon or Peruvian goby, or dragon fish, and its bizarre appearance has made it popular in the trade. This is unfortunate, as not only does it grow very large, but it has specialised feeding requirements and does not survive for very long in freshwater. When provided with the correct conditions, however, it makes a unique and fascinating captive subject. There is a smaller species in the genus, G. peruanus, that does survive in freshwater, being a riverine ...