Chaetodon rainfordi
| Rainford's butterflyfish | |
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| Subgenus: | Discochaetodon
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| Species: | C. rainfordi
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| Binomial name | |
| Chaetodon rainfordi McCulloch, 1923
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Chaetodon rainfordi is a species of marine angelfish with a range restricted to Papua New Guinea, the Great Barrier Reef and Lord Howe Island.[1] Greater than 50% of its distribution is within the protected waters of Australia's Great Barrier Reef Marine Park.[1] There has been a significant population decline of C. rainfordi in the Great Barrier Reef due to extensive coral loss, its primary food source.[1] It inhabits coastal and offshore reefs at depths of 5–20 metres (16–66 ft).[1]