Argolebias nigripinnis “URU 25-16 – Río Negro” – Wild-Collected Eggs
USA SHIPPING ONLY
Bring a true piece of Uruguay into your fish room.
These are Argolebias nigripinnis (URU 25-16 Río Negro) eggs from my own wild-collected stock in Uruguay. This location code represents a documented Río Negro population, maintaining the integrity and lineage serious annual keepers value.
Each portion contains 3–4 weeks’ worth of eggs in peat, carefully harvested and stored. Similar peat collections from this group have yielded 60–100 fry per incubation cycle, with an average of two strong hatches per bag when incubated properly.
What you’re getting:
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Location-coded URU 25-16 Río Negro strain
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Eggs laid by wild-collected parents
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3–4 weeks of production in peat
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Proven hatch rates (with proper incubation)
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Ideal for experienced annual killifish keepers
Argolebias nigripinnis are stunning South American annuals known for their bold contrast and seasonal life cycle — a rewarding project for hobbyists who appreciate the magic of peat incubation and synchronized hatching.
If you love working with true location fish and preserving wild genetics, this is a special opportunity.


















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