Ah,I see. I did think that, but the most 'in focus' pics were of the Westwind fig. I can now see that there are other 'fishmen' but they are all quite blurry. 
Quite, though I blame even more the awkward angles of viewing.
I tried to focus on the 'gaping maw' they seem to have, but even that seemed could be an illusion.

Oh, had a look at my Mage Knight, and there's a fish folk more 'minion' than the Deep Spawn, which look feral, appear to be lunging, and when pulled from base, almost swimming. The Wave Spawn are upright, bearing polearms, and I've have suggested heads looking a bit like carp.
Davros: He understands, and thematically, perhaps all the fish folk were 'in the background,' 'tween Nemo and the British.

Which doesn't assist you, but we ARE trying to figure them out, even if trying your patience at the same time.

Doug