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We just fixed downloads: every STL now comes straight from fast, reliable storage, saved under its own name, we're making 10,000 STL files and dozens of new tools, so things might break. We'll fix them ASAP.

A zebrafish in mid-swim with its tail fin regrowing, the new bony rays fanning out from the cut edge in fine strands. Flowing stripes run along the body, a large round eye sits behind the small mouth, and ribbed dorsal, anal and pectoral fins add movement. The regenerating tail makes it a striking talking point about regeneration and bioelectricity. Displays without a base, ideal for a biology classroom, a science desk or an aquarium lover's shelf.

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