There's a bit of an odd mismatch between the sculpting style on Dagon's body and the head, I can see why Sinewgrab thought it was a conversion.
The fish head and scales are fairly easy to explain, but it's the dinosaur legs that stretches our imagination. Then again, many creatures of ancient mythology (such as Dagon, the fish-god) do that as well...
Who makes the various fishmen? I kind of half-recognize them but not really...
That's from the lower end of "half".
RAFM (recent production from their KS / 7th ed lines)
Black TreeCoincidentally, one of them is carrying the axe that was used as the main sculpting tool of the Black Tree minis. Apart from dodgy work in general, I really couldn't figure out, how the shields are supposed to work. Oh well, if I mix them with a bunch of other fishmen, hopefully nobody starts studying the shield straps.