| Family: | Characidae |
| Species: |
Hemigrammus hyanuary |
| Common Name: |
January Tetra, Green Neon, Costello tetra |
| Size: | Up to 1.7 inches (4.3 cm) |
| Habitat: | South America: Amazon River basin, Lake Hyanuary near Manuas in Brazil. |
| Min Tank Size: | 15 gallon long or larger for schools. |
| Diet: | Omnivorous, will accept most flake foods, frozen, live and freeze-dried. |
| Behavior: | Active and peaceful schooling fish, should be kept in groups of 6 or more. Can be timid |
| Water: | Water Chemistry not critical, temperature 73 – 81°F (23 – 27°C) pH 6.0-7.5 dH range: 5 – 15 |
| Care: | Medium, keep in schools. Likes a well-planted aquarium with lots of hiding places. |
| Communities: | Excellent, with similar sized and active fish. |
| Suitability: | Good, with care. |
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