from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of numerous small colorful tropical freshwater fish of the family Characidae, such as the neon tetra, found in South America and Africa, and often kept in home aquariums. Also called characin.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several species of small South American freshwater fish of the family Characidae, popular in home aquaria.
Short for New Latin Tetragōnopterīnī, group name : Late Latin tetragōnum, tetragon; see tetragon + Greek pteron, wing.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Translingual Tetragonopterus, an obsolete genus that included these fish. (Wiktionary)