Aquaria/Costello tetra

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The Costello tetra is a freshwater tropical fish from the Amazon basin in Brazil and Peru.

In the wild, this fish comes from soft or very soft and slightly acidic water. In an aquarium, some attempt to mimic these water conditions is necessary. A pH between 6.0 and 7.5, hardness up to 15° general hardness, and temperature of 23–27°C (73–81°F) are ideal.[1]

The Costello tetra is an omnivore with a preference for animal foods, such as small worms, crustaceans, and insect larvae. In an aquarium they eat good-quality fish flakes readily. They benefit from a variety of foods, such as live and frozen foods, including bloodworms.

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