The mourning tetra is a small freshwater fish native to South American rivers and streams. It displays a silvery body with a distinctive dark patch near the tail and subtle iridescence. Reaching about 2 inches in length and weighing up to 0.01 pounds, it is peaceful, schooling actively in groups and preferring densely planted habitats. This summary was AI generated
Water type
IUCN Status
Threat to humans
Source: Fishbase
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