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Threadfin Rainbowfish (Iriatherina werneri) are small, peaceful freshwater fish known for their distinctive, long, thread-like fins on males, hence the name. They are also called Featherfin Rainbowfish due to these ornate fins. These fish are native to New Guinea and Australia, inhabiting slow-moving streams and swamps.
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🇺🇸 Ship from USA · On Agora since 2026
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