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The swordtail is a beginner-friendly tropical fish species. This hardy fish comes in various vibrant colors and can be kept in a freshwater tank as small as 10 gallons. These traits make swordtails ...

Planning a home aquarium means choosing fish that is healthy, vibrant, and visually attracting. Many people want an aquarium that looks attractive, calming, and Instagram worthy. Colorful aquarium ...

You can see right through this little aquarium fish from Thailand: Its skin is almost completely transparent. But when the light hits it just right, its body flickers with shimmering rainbow colors.

TOKYO -- Some 1,000 colorful fish of 25 different species from tropical Okinawa Prefecture in southern Japan are brightening up the Ginza district here. At Ginza Sony Park, which opened this month ...