Harlequin tuskfish

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This wrasse stands out in a family well known for garish patterns and colors. Its blue teeth accent the startling combination of red, white, and yellow. It can be found from Japan to Australia, where it is sometimes called a Macaw fish. Until the 1970s it was very rare in aquariums. For a large wrasse, it is rather well behaved in community displays.

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Black-banded leporinus

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Growing to a foot in length, this eye-catching relative of tetras and piranhas is a typical inhabitant on flooded forests in South America. For more than 50 years it has been very popular in the pet trade. While having a reputation for harassing other fishes in home aquariums, it is not aggressive in roomy accommodations.

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