the.com/tetra
the fish that schools by the thousands so nothing dares eat just one
means A small, often brightly colored freshwater fish popular in home aquariums, belonging to the characin family and typically kept in groups.
from Short for 'tetragonopterus,' an old genus name once given to these fish, built from Greek roots: 'tetra' (four) plus 'pteron' (wing or fin) — literally 'four-finned.' The hulking scientific name got worn down in the aquarium trade to its cheerful first syllable, so the fish now carries a name that just means 'four' and nothing else.
- four origins
- name comes from Greek for the number four
- neon glow
- stripe reflects light, no actual bioluminescence involved
- blind variety
- cave species evolved away its eyes entirely
- acid lovers
- thrive in soft, tannin-stained Amazon blackwater
- tiny titans
- most species stay under two inches long
tetra pak — swedish packaging company founded 1951, dominates 26% of global liquid packaging market
neon tetra — popular aquarium fish from amazon basin, bright blue and red stripes, kept in millions of home tanks
tetris — soviet video game released 1984, over 100 million copies sold across all platforms