Fish ID

[steakman]

Please, ID these fish for me.

Thanks

 

[SubRosa]

First two look like Vieja synspilum, second two look like Protomelas similis. These fish all appear to be juveniles. Identification is more certain with adults.

 

[steakman]

SubRosa, thank you for your knowledgeable input.
They seem to be both female due to their body shape and color, don't you think?
I bought a used tank and they came with it.
SM

 

[SubRosa]

They look like females, but most FW fish tend to look like females regardless of sex until they hit sexual maturity. How big are they?

 

[steakman]

The one on the first 2 pics is about 3in, and the other is about 3 and 1/2in.
Males tend to show some kind of color already at this size, don't they?
But both of them are just plain silver and streak line of black.

 

[SubRosa]

A 3.5" Proto that looks like that is almost certainly female. The other is most likely female as well, but there's a bit more room for error.