WOW!!! Bouncing around today, and saw these ( never heard of them )

[Magnum Man]

And in stock at one of the on line sellers I’ve bought from… don’t have a tank for them, but they look amazing…

Hypseleotris cyprinoides​

 

[Colin_T]

We have empire gudgeons here in Australia that are similar. They don't breed in captivity and if they do, the babies don't survive because they need salt water for the first few months of life. The African ones in your picture might be different but Google says they occur in marine, brackish and freshwater environments, which is the same as the Australian species.

The fish in the picture is probably an adult male in breeding colour.

 

[GaryE]

If they are like the Australian species, the colour is seasonal. When the breeding season comes, wow, Before and after, meh.

 

[Mr Limpet]

They were showing up in shops here in NYC a decade ago. Very attractive with interesting behavior, but mine would only eat live or frozen food. Unfortunately, they’re virtually impossible to breed in captivity.