Why ‘Fish’ Isn’t a Real Scientific Group (But We Still Use the Word Anyway)
Have you ever gazed into a dazzling aquarium or watched a wild river teeming with life and thought, “Look at all those fish!”? It feels so natural to lump goldfish, salmon, and sharks under one simple label. But here’s the shocking twist: to biologists, there simply isn’t any such thing as a true scientific group ...