Aquarium guide
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Gymnocorymbus ternetzi
 

Gymnocorymbus ternetzi

The black tetra or black widow breeds best in low light levels and can lay up to 1,000 eggs in soft, acidic conditions. A veil variety, with noticeably larger fins, has been evolved through artificial selection. Size: 5-6 cm.

Gymnocorymbus ternetzi

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