Enoplosus armatus, the old wife (plural old wives), is a species of perciform fish endemic to the temperate coastal waters of Australia.[1] It is the only modern species in the family Enoplosidae.It has a deep and compressed body and concave forehead. These features are characteristic of typical butterflyfishes.[3] However, the old wife is easily distinguished by its silver-and-black, vertical, zebra-striped coloration, and by its two prominent dorsal fins. The second dorsal fin is very long and sickle-shaped. The fish grows up to 50 cm long. Its dorsal fins have bony, knife-like spines.[4] These have no obvious venom groove nor gland.[5] Nonetheless, the spines are widely considered to inflict a painful venom.The name "old wife" refers to the sound it makes when caught, caused by it grinding its teeth.[1][6] Other vernacular names have included "bastard dory", "zebra-fish" (also used for Girella zebra), and "double scalare".[7] It has a similar range and appearance to the Moonlighter (Tilodon sexfasciatus). (From Wikipedia)
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