Sargocentron sp. (Fowler 1904, originally Holocentrum leo Cuvier 1829; 15–25cm) is the extant squirrel fish. This nocturnal marine fish has large eyes. Preopercular spines are venomous. 33 species are recognized.
Tautogolabrus adspersus (Walbaum 1792, 38cm long) is the extant cunner or blue perch, a sea wrasse native to the NE coast of North America. Here it nests with the squirrel fish, Sargocentron.
Fowler HW 1904. Proc. Acad. Nat. Sci. Philad., 56.
Nelson JS, Grane T and Wilson MVH 2016. Fishes of the World, 5th ed. 705pp. Wiley
Walbaum 1792. Petri Artedi sueci genera piscium. In quibus systema totum ichthyologiae proponitur cum classibus, ordinibus, generum characteribus, specierum differentiis, observationibus plurimis. Redactis speciebus 242 ad genera 52. Ichthyologiae pars III. Ant. Ferdin. Rose, Grypeswaldiae [Greifswald]. Part 3: [i-viii] + 1-723.