The front part of the pectoral fin, those fan-shaped things on the side, have thickened…
And the fish actually uses those to walk around on the bottom.
So those things that you see under the fish, they’re like little thin legs that are actually part of the fin.
They are really interesting fish with a lot of unusual morphological features for life on the seafloor,
hunting for little invertebrates, worms and other things.