The flying gurnard and sea robin enter the LRT

Strange fish!
Dactylopterus volitans (Linneaus 1758; 50 cm) is the extant flying gurnard, a bottom-feeder living in warm shallow seas. Typically Dactylopterus is allied with long-snouted pipefish and seahorses. Here it nests as a type of scorpionfish, between the barracuda and tetraodontiformes. When startled the butterfly-like pectoral fins spread wide as the undulating tail pushes the fish away from danger. The lacrimals are quite large and extend to the anterior of the skull. The tabulars are also quite large and extend like a dorsal shield. The pelvic fins are below the giant pectoral fins.

Prionotus evolans (Linneaus 1766; 40cm; Fig. 2) is the extant striped sea robin, a scorpionfish that uses a set of finger-like flexible spines of its large pectoral fin to walk on the seafloor. With a long straight snout, it looks more like it’s barracuda-like ancestors, but nests with its sister, the short-snouted flying gurnard, Dactylopterus (above). Note the large lacrimal and jugal protecting the cheek.

These additions and several revisions
to the large reptile tree (LRT, 1568 taxa) have moved Gogonasus, Cabonnichthys, Osteoleopis and Eusthenopteron to a more traditional nesting closer to tetrapods. Onychodus remains basal to most teleosts.

References
Linnaeus C von 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.
Linneaus C von 1766. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio duodecima, reformata. pp. 1–532. Holmiæ. (Salvius)

wiki/Flying_gurnard
wiki/Triglidae (sea robins)
wiki/Prionotus_carolinus (northern sea robin)