{
  "id": 19845019,
  "title": "Colorful fish reveal how species stay distinct despite interbreeding",
  "url": "https://urgent.news/2026/11/13/colorful-fish-reveal-how-species-stay-distinct-despite-interbreeding",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-13T17:20:06.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-11-fish-reveal-species-stay-distinct.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "Vividly colored fish dwelling at the bottom of shallow Midwestern streams may help biologists understand the evolutionary mechanisms by which species remain distinct despite their similarities and overlapping ranges. Orangethroat and rainbow darters regularly interbreed where their ranges overlap, yet—millions of years after they first diverged—they remain separate species.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}