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Hemigrammus hyanuary (Costello Tetra)

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This species resembles a slender version of the more popular head-and-taillight tetra, having a coppery spot at the base of the tail and a silvery patch at the top of the head. Males are more slender than females and have a small hook on the anal fin.

This is a delightful fish for aquaria with similar sized species. Looks best in water filtered through peat or with blackwater extract added.

Fish information (behaviour and breeding):

A peaceful, schooling fish that prefers midwater levels of the aquarium. It is a shy species that will only do well in a tank with plenty of cover (e.g., live or plastic plants) and peaceful tankmates of similar size and temperament.

This fish breeds in a similar way to other small tetras. Soft, acid water is essential. Eggs are scattered on the bottom of the tank and are prone to bacterial and fungal decay. After a few days the fry are free swimming and will accept Liquifry as well as small live foods such as brine shrimp nauplii.

Family Group: Characins
Distribution Brazil
Temperature 24-28C
Size 4 cm
Water Parameters Soft, acid water preferred, but adaptable
Water PH 6.0-7.0